List

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Exact age unknown


Name	State	Political party	Date of birth	Age upon taking office	Tenure	Notes
Saira Blair	West Virginia	Republican	Jul 11, 1996	18 years, 143 days	Dec 1, 2014 – Dec 1, 2018	Daughter of Craig Blair.
James E. Wheeler	New Hampshire	Republican	May 31, 1984	18 years, 187 days	Dec 4, 2002 – Dec 6, 2006	^[2]^[3]^[4]^[5]^[6]^[7]
Valerie McDonnell	New Hampshire	Republican	May 25, 2004	18 years, 196 days	Dec 7, 2022 – present	Youngest currently serving state legislator in the United States.
Derrick Seaver	Ohio	Democratic	Feb 6, 1982	18 years, 332 days	Jan 3, 2001 – Dec 31, 2006	Switched to the Republican Party in November 2004.^[8]
Derrick Seaver	Ohio	Republican	Feb 6, 1982	18 years, 332 days	Jan 3, 2001 – Dec 31, 2006	Switched to the Republican Party in November 2004.^[8]
Jacob Bachmeier	Montana	Democratic	Jan 29, 1998	18 years, 339 days	Jan 2, 2017 – Jan 4, 2021	^[9]
Dawson Holle	North Dakota	Republican	Nov 25, 2003	19 years, 6 days	Dec 1, 2022 – present
Tony Labranche	New Hampshire	Democratic	Nov 11, 2001	19 years, 22 days	Dec 3, 2020 – Aug 8, 2022	Left the Democratic Party in January 2022.^[10]
Tony Labranche	New Hampshire	Independent	Nov 11, 2001	19 years, 22 days	Dec 3, 2020 – Aug 8, 2022	Left the Democratic Party in January 2022.^[10]
Joe Sweeney	New Hampshire	Republican	Nov 8, 1993	19 years, 27 days	Dec 5, 2012 – present
Josh Holstein	West Virginia	Republican	Nov 2, 2001	19 years, 29 days	Dec 1, 2020 – present
Caleb Hanna	West Virginia	Republican	Oct 29, 1999	19 years, 33 days	Dec 1, 2018 – Jan 2, 2024	Youngest-ever African-American state legislator.^[11]
Rio Tilton	New Hampshire	Republican	Jun 15, 1996	19 years, 51 days	Aug 5, 2015 – Dec 5, 2018
Mallerie Stromswold	Montana	Republican	Oct 29, 2001	19 years, 67 days	Jan 4, 2021 – Jan 17, 2023
Maureen Manning	New Hampshire	Democratic	Sep 12, 1961	19 years, 82 days	Dec 3, 1980 – Dec 3, 1986
Brian Poznanski	New Hampshire	Democratic	Jul 31, 1989	19 years, 125 days	Dec 3, 2008 – Dec 1, 2010
Kevin H. Smith	New Hampshire	Republican	Jul 28, 1977	19 years, 129 days	Dec 4, 1996 – Dec 2, 1998	Later candidate for governor (2012), town manager of Londonderry (2013–2022) and candidate for U.S. senator (2022).
Jack Uhde	Montana	Democratic	Aug 27, 1957	19 years, 129 days	Jan 3, 1977 – Jan 5, 1981	At the time the youngest-ever Montana state representative.^[9]
Yvonne Dean-Bailey	New Hampshire	Republican	Dec 1, 1995	19 years, 169 days	May 19, 2015 – Apr 19, 2018
Stephen Duprey	New Hampshire	Republican	Jun 1, 1953	19 years, 188 days	Dec 6, 1972 – Dec 1, 1976	Later chair of the state Republican Party (1997–2001).
Michael Elconin	Wisconsin	Democratic	Jun 20, 1953	19 years, 195 days	Jan 1, 1973 – Jan 3, 1977
Dennis Ruprecht	New Hampshire	Democratic	May 15, 1999	19 years, 204 days	Dec 5, 2018 – Dec 17, 2021
Kalan Haywood	Wisconsin	Democratic	Jun 5, 1999	19 years, 216 days	Jan 7, 2019 – present
Cassandra Levesque	New Hampshire	Democratic	May 3, 1999	19 years, 216 days	Dec 5, 2018 – present
Alison Conn	Montana	Republican	May 21, 1961	19 years, 229 days	Jan 5, 1981 – Jan 3, 1983	At the time the youngest-ever Republican legislator.^[12]^[13]
Scott Merrick	New Hampshire	Democratic	Mar 29, 1985	19 years, 247 days	Dec 1, 2004 – Oct 2009
Michael Weeden	New Hampshire	Republican	Mar 11, 1991	19 years, 265 days	Dec 1, 2010 – Dec 5, 2012
Thomas R. Lussier	Massachusetts	Democratic	Apr 5, 1957	19 years, 275 days	Jan 5, 1977 – Jan 1, 1985	Youngest-ever Massachusetts legislator.^[14]^[15]
Jonah Wheeler	New Hampshire	Democratic	Mar 1, 2003	19 years, 281 days	Dec 7, 2022 – present
Jeffrey Fontas	New Hampshire	Democratic	Jan 14, 1987	19 years, 326 days	Dec 6, 2006 – Dec 3, 2008
Dave Pine	New Hampshire	Democratic	Dec 22, 1958	19 years, 349 days	Dec 6, 1978 – Dec 3, 1980
Andrew Edwards	New Hampshire	Democratic	1987	19 years	Dec 6, 2006 – Dec 3, 2008	^[16]^[17]^[18]^[19]
Kyle Jones	New Hampshire	Republican	1991	19 years	Dec 1, 2010 – Dec 5, 2012	^[2]^[20]^[21]^[22] Son of Laura Jones.
Gregory Reed	Vermont	Republican	1953	19 years	Jan 3, 1973 –[?]	^[23]
Jay Lucas	New Hampshire	Republican	Oct 18, 1954	20 years, 47 days	Dec 4, 1974 – Dec 6, 1978	Later nominee for governor (1998).
Nicholas Kettle	Rhode Island	Republican	Oct 18, 1990	20 years, 79 days	Jan 5, 2011 – Feb 22, 2018	Youngest-ever Rhode Island state senator.^[24]
Jesse Laslovich	Montana	Democratic	Oct 3, 1980	20 years, 92 days	Jan 3, 2001 – Jan 3, 2005	Later state senator (2005–2010).
Homer Paul	Oklahoma	Democratic	Aug 4, 1904	20 years, 107 days	Nov 17, 1926 – Nov 19, 1930	^[25] Later state senator (1932–1948) and state senate president pro tempore (1945–1947).
Aaron Coleman	Kansas	Democratic	Sep 20, 2000	20 years, 113 days	Jan 11, 2021 – Jan 9, 2023	Left the Democratic Party from January to February 2021. Suspended from the party in February 2022.
Aaron Coleman	Kansas	Independent	Sep 20, 2000	20 years, 113 days	Jan 11, 2021 – Jan 9, 2023
Joshua Higginbotham	West Virginia	Republican	Jul 23, 1996	20 years, 131 days	Dec 1, 2016 – Nov 5, 2021
James Davis	Iowa	Whig	Jul 20, 1826	20 years, 133 days	Nov 30, 1846 – Dec 3, 1848	^[26]
John Breckinridge	Virginia	Independent	Dec 2, 1760	20 years, 177 days	May 28, 1781 – May 1782, May 5, 1783 – Oct 17, 1785	Later U.S. representative-elect (1792, did not serve), attorney general of Kentucky (1793–1797), Kentucky state representative (1798–1800), speaker of the Kentucky House (1799–1800), U.S. senator (1801–1805) and U.S. attorney general (1805–1806). Joined the Democratic-Republican Party.
Aundre Bumgardner	Connecticut	Republican	Jul 5, 1994	20 years, 186 days	Jan 7, 2015 – Jan 4, 2017 Jan 4, 2023 – present	Switched to the Democratic Party in 2018.
Aundre Bumgardner	Connecticut	Democratic	Jul 5, 1994	20 years, 186 days	Jan 7, 2015 – Jan 4, 2017 Jan 4, 2023 – present	Switched to the Democratic Party in 2018.
Elias Coop-Gonzalez	West Virginia	Republican	May 2, 2002	20 years, 213 days	Dec 1, 2022 – present	^[27]
Joseph Stallcop	New Hampshire	Democratic	May 7, 1996	20 years, 214 days	Dec 7, 2016 – Aug 6, 2018	Switched to the Libertarian Party in May 2017.
Joseph Stallcop	New Hampshire	Libertarian	May 7, 1996	20 years, 214 days	Dec 7, 2016 – Aug 6, 2018	Switched to the Libertarian Party in May 2017.
Caleb Q. Dyer	New Hampshire	Republican	May 5, 1996	20 years, 216 days	Dec 7, 2016 – Dec 4, 2018	Switched to the Libertarian Party in February 2017.
Caleb Q. Dyer	New Hampshire	Libertarian	May 5, 1996	20 years, 216 days	Dec 7, 2016 – Dec 4, 2018	Switched to the Libertarian Party in February 2017.
Braxton Mitchell	Montana	Republican	May 20, 2000	20 years, 229 days	Jan 4, 2021 – present	^[28]
David Stone	North Carolina	Independent	Feb 17, 1770	20 years, 257 days	Nov 1, 1790 – Feb 7, 1795, Nov 18, 1811 – Dec 25, 1812	Later U.S. representative (1799–1801), U.S. senator (1801–1807, 1813–1814) and governor (1808–1810).
David Stone	North Carolina	Democratic-Republican	Feb 17, 1770	20 years, 257 days	Nov 1, 1790 – Feb 7, 1795, Nov 18, 1811 – Dec 25, 1812
William R. King	North Carolina	Democratic-Republican	Apr 7, 1786	20 years, 269 days	Jan 1, 1807 – Jan 1, 1809	Vice president of the United States (1853)
D.J. Bettencourt	New Hampshire	Republican	Jan 6, 1984	20 years, 330 days	Dec 1, 2004 – May 27, 2012	Later House majority leader (2010–2012). Youngest majority leader in New Hampshire history.^[29]
Michael J. Obuchowski	Vermont	Democratic	Feb 4, 1952	20 years, 334 days	Jan 3, 1973 – Jan 2011	Later speaker of the state House (1995–2001).
Harold W. Giard	Vermont	Democratic	Feb 1, 1952	20 years, 337 days	Jan 3, 1973 – Jan 1981	Later state senator (2005–2013).
Kevin Soucie	Wisconsin	Democratic	Feb 2, 1954	20 years, 338 days	Jan 6, 1975 – Jan 3, 1981
Shaun Doherty	New Hampshire	Republican	Dec 19, 1987	20 years, 350 days	Dec 3, 2008 – Dec 5, 2012	^[30]
Karen Swanson	Massachusetts	Democratic	Jan 15, 1954	20 years, 351 days	Jan 1, 1975 – July 12, 1978
Joseph Lane	Indiana	Democratic	Dec 14, 1801	20 years, 353 days	Dec 2, 1822 – 1823, 1830 – 1833, 1838 – 1839	Later state senator (1839–1840, 1844–1846), governor of Oregon Territory (1849–1850, 1853), delegate to the U.S. House of Representatives (1851–1859), shadow U.S. senator (1858–1859), U.S. senator (1859–1861) and southern Democratic nominee for vice president of the United States (1860).
Fred Kessler	Wisconsin	Democratic	Jan 11, 1940	20 years, 357 days	Jan 3, 1961 – Jan 7, 1963, Jan 4, 1965 – Jul 5, 1972, Jan 3, 2005 – Jan 3, 2019	At the time the youngest-ever Wisconsin state legislator.^[31]
Jim Normand	New Hampshire	Democratic	Dec 12, 1953	20 years, 357 days	Dec 4, 1974 – Dec 6, 1978	Later state executive councilor (1997–1999).
Homer Hendricks	Texas	Democratic	Jan 19, 1900	20 years, 358 days	Jan 11, 1921 – Jan 13, 1925	Youngest-ever Texas state representative.^[32]
Thomas Dixon Jr.	North Carolina	Democratic	Jan 11, 1864	20 years, 362 days	Jan 7, 1885 – Jan 5, 1887	^[33]
Garrett Muscatel	New Hampshire	Democratic	Dec 7, 1997	20 years, 363 days	Dec 5, 2018 – Jun 8, 2020
Jesse N. Smith	Utah	Independent	Dec 2, 1834	20–21 years	1855 – 1856, Jan 8, 1872 – Jan 12, 1874, Jan 10, 1876 – Jan 14, 1878, Jan 12, 1880 – Jan 9, 1882	Later Arizona legislator (1897–1899).
Seaborn Roddenbery	Georgia	Democratic	Jan 12, 1870	21 years, 0 days	Jan 12, 1891 – 1895	Later mayor of Thomasville (1903–1904) and U.S. representative (1910–1913).
Sherry Shealy Martschink	South Carolina	Republican	Oct 26, 1949	21 years, 14 days	Nov 9, 1970 – 1974	Daughter of Ryan Shealy. Later state senator (1987–1990) and candidate for lieutenant governor (1990).
Tad Jude	Minnesota	Democratic	Dec 13, 1951	21 years, 20 days	Jan 2, 1973 – Jan 4, 1983	Youngest-ever Minnesota state legislator.^[34] Son of Victor N. Jude. Later state senator (1983–1989) and candidate for state attorney general (2022). Switched to the Republican Party in 1992.
Clyde R. Hoey	North Carolina	Democratic	Dec 11, 1877	21 years, 24 days	Jan 4, 1899 – Jan 7, 1903	Later state senator (1903–1905), U.S. representative (1919–1921), governor (1937–1941) and U.S. senator (1945–1954).
Claire Cory	North Dakota	Republican	Sep 11, 1998	21 years, 30 days	Oct 11, 2019 – present	^[35]
Amber Mariano	Florida	Republican	Nov 1, 1995	21 years, 32 days	Dec 3, 2016 – Nov 8, 2022
Alex Looysen	North Dakota	Republican	Sep 21, 1991	21 years, 71 days	Dec 1, 2012 – Dec 1, 2016
John G. Jackson	Virginia	Democratic-Republican	Sep 22, 1777	21 years, 72 days	Dec 3, 1798 – Dec 7, 1801, Dec 2, 1811 – Nov 30, 1812	Son of George Jackson. Later U.S. representative (1803–1810, 1813–1817).
Michael E. Cassidy	Pennsylvania	Democratic	Sep 15, 1955	21 years, 77 days	Dec 1, 1976 – Dec 1, 1978	^[36]
Jack W. Connell Jr.	Texas	Democratic	Oct 21, 1937	21 years, 84 days	Jan 13, 1959 – Jan 8, 1963
Mark Connolly	New Hampshire	Republican	Sep 2, 1955	21 years, 90 days	Dec 1, 1976 – Dec 6, 1978	Later candidate for state treasurer (1990) and for governor (2016). Switched to the Democratic Party.
Joseph Montoya	New Mexico	Democratic	Sep 24, 1915	21 years, 99 days	Jan 1, 1937 – Jan 1, 1941	Youngest-ever New Mexico state representative and subsequently the youngest-ever New Mexico state senator.^[37] Later state senator (1941–1947), lieutenant governor (1947–1951, 1955–1957), U.S. representative (1957–1964) and U.S. senator (1964–1977).
Cordell Hull	Tennessee	Democratic	Oct 2, 1871	21 years, 100 days	Jan 10, 1893 – Jan 12, 1897	Later U.S. representative (1907–1921, 1923–1931), chair of the DNC (1921–1924), U.S. senator (1931–1933) and U.S. secretary of state (1933–1944).
Mike Unhjem	North Dakota	Republican	Aug 22, 1953	21 years, 101 days	Dec 1, 1974 – Dec 1, 1986	^[38]
David Clarenbach	Wisconsin	Democratic	Sep 26, 1953	21 years, 102 days	Jan 6, 1975 – Jan 4, 1993	Grandson of Alexander Frederick. Later speaker pro tempore (1983–1993).
Neil Craig Corson	Maine	Republican	Aug 24, 1947	21 years, 102 days	Dec 4, 1968 – Dec 2, 1970	^[39]^[40]
Edward Lloyd	Maryland	Democratic-Republican	Jul 22, 1779	21 years, 104 days	Nov 3, 1800 – Nov 3, 1806	Later U.S. representative (1806–1809), governor (1809–1811), U.S. senator (1819–1826), state senator (1826–1831) and president of the state senate (1826–1827).
Drew Dennert	South Dakota	Republican	Aug 28, 1995	21 years, 128 days	Jan 3, 2017 – present
Matthew Heilman	North Dakota	Republican	Jul 19, 2001	21 years, 135 days	Dec 1, 2022 – present
Scott Newhard	Iowa	Democratic	Aug 23, 1951	21 years, 138 days	Jan 8, 1973 – Jan 7, 1979	Youngest-ever Iowa state legislator.^[41]
Wayne Olhoft	Minnesota	Democratic	Aug 1, 1951	21 years, 154 days	Jan 2, 1973 – Jan 3, 1983
Steven Howard	Vermont	Democratic	Aug 3, 1971	21 years, 156 days	Jan 6, 1993 – Jan 1999, Jan 2005 – Jan 2011
Joseph Walkovich	Connecticut	Democratic	Aug 1, 1953	21 years, 160 days	Jan 8, 1975 – Jan 9, 1985	^[42]
Jamie Whitten	Mississippi	Democratic	Apr 18, 1910	21 years, 162 days	Sep 27, 1931 – Jan 5, 1932	Later U.S. representative (1941–1995) and dean of the U.S. House (1979–1995).
John William Connelly	Texas	Democratic	Aug 2, 1919	21 years, 165 days	Jan 14, 1941 – Jan 9, 1945	^[43]
Patrick J. Kennedy	Rhode Island	Democratic	Jul 14, 1967	21 years, 171 days	Jan 1, 1989 – Jan 3, 1993	Son of Ted Kennedy and nephew of president John F. Kennedy. Later U.S. representative (1995–2011).
R. Carlisle Burdick	Minnesota	[?]	Jul 14, 1834	21 years, 172 days	Jan 2, 1856 – Jan 6, 1857	^[44]
Benjamin Bubar Jr.	Maine	Republican	Jun 17, 1917	21 years, 173 days	Dec 7, 1938 – Dec 6, 1944	Son of state representative Benjamin Bubar Sr. Later Prohibition Party nominee for president of the United States (1976, 1980).
Brandon Prichard	North Dakota	Republican	May 29, 2001	21 years, 186 days	Dec 1, 2022 – present
Henry Tazewell	Virginia	Independent	Nov 27, 1753	21 years, 186 days	Jun 1, 1775 – Mar 31, 1785	Later U.S. senator (1794–1799) and president pro tempore of the U.S. Senate (1795). Joined the Anti-Administration and Democratic-Republican parties.
Jim Douglas	Vermont	Republican	Jun 21, 1951	21 years, 196 days	Jan 3, 1973 – Jan 3, 1979	Later state secretary of state (1981–1993), nominee for U.S. senator (1992), state treasurer (1995–2003) and governor (2003–2011).
Nathan Carlow	Maine	Republican	May 18, 1999	21 years, 198 days	Dec 2, 2020 – present
Barry Hobbins	Maine	Democratic	May 17, 1951	21 years, 203 days	Dec 6, 1972 – Dec 5, 1984, Dec 5, 2012 – Dec 3, 2016	Later state senator (1988–1990, 2004–2012) and state public advocate (2017–2021).
Rudy García	Florida	Republican	Apr 15, 1963	21 years, 205 days	Nov 6, 1984 – Nov 8, 1988 Nov 7, 1989 – Nov 7, 2000	Later state senator (2000–2010) and candidate for mayor of Hialeah (2011).
Jerry J. O'Connell	Montana	Democratic	Jun 14, 1909	21 years, 205 days	Jan 5, 1931 – 1934	Later U.S. representative (1937–1939).
Tulsi Gabbard	Hawaii	Democratic	Apr 12, 1981	21 years, 207 days	Nov 5, 2002 – Nov 2, 2004	Daughter of Mike Gabbard. Later U.S. representative (2013–2021) and candidate for president of the United States (2020). Left the Democratic Party in October 2022.
Sarah Laszloffy	Montana	Republican	Jun 13, 1991	21 years, 208 days	Jan 7, 2013 – Jan 2, 2017
John Bell	Tennessee	Democratic-Republican	Feb 18, 1796	21 years, 209 days	Sep 15, 1817 – Nov 25, 1817	Later U.S. representative (1827–1841), speaker of the U.S. House (1834–1835), secretary of war (1841), state representative (1847), U.S. senator (1847–1859) and Constitutional Union nominee for president of the United States (1860).
DeWitt Hale	Texas	Democratic	Jun 10, 1917	21 years, 214 days	Jan 10, 1939 – Dec 14, 1940, Jan 13, 1953 – Sep 30, 1978
Will L. King	Iowa	Republican	Jun 9, 1897	21 years, 218 days	Jan 13, 1919 – Jan 9, 1921	^[45]
Thomas J. Creamer	New York	Democratic	May 26, 1843	21 years, 220 days	Jan 1, 1865 – Dec 31, 1867, Jan 1, 1889 – Dec 31, 1889	Later state senator (1868–1871) and U.S. representative (1873–1875, 1901–1903).
Robert F. Larkin Jr.	Massachusetts	Democratic	May 29, 1955	21 years, 221 days	Jan 5, 1977 – Jan 7, 1981
Justin Chenette	Maine	Democratic	Apr 23, 1991	21 years, 226 days	Dec 5, 2012 – Dec 7, 2016	Later state senator (2016–2020).
Drew Christensen	Minnesota	Republican	May 21, 1993	21 years, 230 days	Jan 6, 2015 – Jan 7, 2019
Roger B. Taney	Maryland	Federalist	Mar 17, 1777	21 years, 233 days	Nov 5, 1798 – Jan 3, 1800	Later state attorney general (1827–1831), U.S. attorney general (1831–1833), secretary of the treasury (1833–1834) and chief justice (1836–1864).
Elise Hall	Oklahoma	Republican	Mar 26, 1989	21 years, 236 days	Nov 17, 2010 – Nov 21, 2018
Patrick B. Augustine	Kansas	Democratic	May 14, 1955	21 years, 241 days	Jan 10, 1977 – Jan 12, 1981
Stephen Smith	Arkansas	Democratic	May 15, 1949	21 years, 241 days	Jan 11, 1971 – Jan 13, 1975
John Tyler	Virginia	Democratic-Republican	Mar 29, 1790	21 years, 248 days	Dec 2, 1811 – Nov 11, 1816, 1839	Son of John Tyler Sr. Later U.S. representative (1816–1821), governor (1825–1827), U.S. senator (1827–1836), senate president pro tempore (1835), vice president (1841), president (1841–1845, at the time the youngest-ever U.S. president), member of the Provisional Confederate Congress (1861–1862) and representative-elect of the Confederate States Congress (1861–1862, died). Switched to the Democratic, Whig and Tyler Democratic parties.
Alec Ryncavage	Pennsylvania	Republican	Mar 27, 2001	21 years, 249 days	Dec 1, 2022 – present
Joe Mitchell	Iowa	Republican	Apr 23, 1997	21 years, 253 days	Jan 1, 2019 – Jan 1, 2023
Jewell Jones	Michigan	Democratic	Apr 11, 1995	21 years, 265 days	Jan 1, 2017 – present	Youngest legislator in Michigan history.^[46]
J.T. Larson	Wyoming	Republican	Apr 6, 2001	21 years, 271 days	Jan 2, 2023 – present
Robert M. Clarke	California	Republican	Mar 5, 1879	21 years, 273 days	Dec 3, 1900 – Dec 1, 1902	^[47]
James Arthur Field	Vermont	Republican	Apr 10, 1941	21 years, 274 days	Jan 9, 1963 –[?]	^[48]^[49]
John S. Addis	Connecticut	Democratic	Apr 4, 1889	21 years, 275 days	Jan 4, 1911 – Jan 3, 1917	^[50] Later state treasurer (1935–1937).
Edmund Benjamin Grunwald	Wisconsin	Republican	Mar 27, 1899	21 years, 282 days	Jan 3, 1921 – Jan 3, 1923	^[51]
Josh Cockroft	Oklahoma	Republican	Feb 6, 1989	21 years, 283 days	Nov 16, 2010 – Nov 15, 2018	Later state secretary of state (2023–present).
William Henry McMorrow	Massachusetts	Democratic	Mar 23, 1871	21 years, 287 days	Jan 4, 1893 – Jan 2, 1895	Later state senator (1895–1897).
James G. Maguire	California	Democratic	Feb 22, 1853	21 years, 288 days	Dec 7, 1874 – Dec 4, 1876	Later U.S. representative (1893–1899) and nominee for governor (1898).
Patrick Seymour	Vermont	Republican	Mar 25, 1997	21 years, 290 days	Jan 9, 2019 – Feb 24, 2022	Priorly member of the Democratic Party.
Ben Queen	West Virginia	Republican	Feb 7, 1995	21 years, 298 days	Dec 1, 2016 – Dec 1, 2022	Later state senator (2022–present).
Lafayette Lane	Oregon	Democratic	Nov 12, 1842	21 years, 305 days	Sep 12, 1864 – Oct 22, 1864	Son of Joseph Lane. Later U.S. representative (1875–1877).
Calvin Callahan	Wisconsin	Republican	Mar 2, 1999	21 years, 308 days	Jan 4, 2021 – present
George Plater	Maryland	Proprietary	Nov 8, 1735	21 years, 324 days	Sep 28, 1757 – May 24, 1768	Later state senator (1771–1774, 1777–1791), member of the Annapolis Convention (1775–1776), president of the state senate (1780–1782, 1784, 1785, 1786, 1787–1788, 1790) and governor (1791–1792). Switched to the Federalist Party.
Sydney Emanuel Mudd I	Maryland	Republican	Feb 12, 1858	21 years, 329 days	Jan 7, 1880 – Jan 2, 1884, Jan 1, 1896 – Jan 5, 1898	Later U.S. representative (1890–1891, 1897–1911) and speaker of the state House (1896–1897).
Kenneth M. O'Brien	Massachusetts	Democratic	Feb 5, 1951	21 years, 333 days	Jan 3, 1973 – Jan 1, 1975
Brodie Deshaies	New Hampshire	Republican	Jan 1, 1999	21 years, 336 days	Dec 2, 2020 – Dec 7, 2022
Reid W. Crawford	Iowa	Republican	Feb 6, 1951	21 years, 337 days	Jan 8, 1973 – Aug 8, 1981
Kevin Furey	Montana	Democratic	Jan 24, 1983	21 years, 345 days	Jan 3, 2005 – 2007	Succeeded in office by his father Tim.^[52]
Eugene Miller	Texas	Democratic	Jan 25, 1899	21 years, 352 days	Jan 11, 1921 – Jan 13, 1925	Later state senator (1925–1931) and state senate president pro tempore (1929–1931).
Jeramey Anderson	Mississippi	Democratic	Dec 6, 1991	21 years, 355 days	Nov 26, 2013 – present
George Cushingberry Jr.	Michigan	Democratic	Jan 6, 1953	21 years, 360 days	Jan 1, 1975 – Dec 31, 1982, Jan 1, 2005 – Dec 31, 2010
Charles N. Brush	Connecticut	Democratic	1905	21 years	Jan 5, 1927 – Jan 7, 1931	^[53]
Anthony Edgecomb	Maine	Republican	1993	21 years	Dec 3, 2014 – Dec 7, 2016	Grandson of Peter Edgecomb.
Robert W. Ginnett	Washington	Democratic	1915	21 years	Jan 11, 1937 – Jan 9, 1939	^[54]^[55]
C. Huntington Lathrop	Connecticut	Republican	1893	21 years	Jan 6, 1915 – Jan 3, 1917	^[56]
Joshua Whitehouse	New Hampshire	Republican	Apr 1993	21 years	Dec 3, 2014 – Dec 7, 2016
John B. Henderson	Missouri	Democratic	Nov 16, 1826	22 years, 4 days	Nov 20, 1848 – 1858 1856–1858	Since Henderson was only 22 years old, his swearing-in was in violation of the state constitution's age requirement of 24 years.^[57] Later U.S. senator (1862–1869).
Kayla Kessinger	West Virginia	Republican	Nov 25, 1992	22 years, 6 days	Dec 1, 2014 – present
James Henry Brennan	Massachusetts	Democratic	Dec 21, 1888	22 years, 14 days	Jan 4, 1911 – Jan 6, 1915, Jan 1, 1919 – Jan 7, 1920
Doyle Conner	Florida	Democratic	Dec 17, 1928	22 years, 16 days	Jan 2, 1951 – Jan 3, 1961	Later speaker of the state House (1957–1959) and state agriculture commissioner (1961–1991).
Simon Sefzik	Washington	Republican	Dec 21, 1999	22 years, 21 days	Jan 11, 2022 – Dec 9, 2022	Youngest-ever Washington state senator.^[58]
James W. Grimes	Iowa	Whig	Oct 20, 1816	22 years, 23 days	Nov 12, 1838 – Nov 3, 1839, Dec 4, 1843 – May 4, 1845, Nov 6, 1852 – Dec 3, 1854	Later governor (1854–1858) and U.S. senator (1859–1869). Co-founder of the state Republican Party (1856).
Cecil H. Underwood	West Virginia	Republican	Nov 5, 1922	22 years, 26 days	Dec 1, 1944 – Dec 1, 1956	Later governor (1957–1961, 1997–2001). Both the youngest and the oldest person to serve as governor of the state, winning his second term 40 years after winning his first.^[59]
Gene Stipe	Oklahoma	Democratic	Oct 21, 1926	22 years, 28 days	Nov 18, 1948 – Nov 18, 1954	Later state senator (1957–2003), becoming the longest-serving state senator in Oklahoma history.^[60]
David Cote	New Hampshire	Democratic	Oct 28, 1960	22 years, 34 days	Dec 1, 1982 – Jul 5, 2023	Later minority leader (2022).
Eugene Talbert	Texas	Democratic	Dec 8, 1914	22 years, 35 days	Jan 12, 1937 – Jan 14, 1941	^[61]
Kenneth Corn	Oklahoma	Democratic	Oct 8, 1976	22 years, 41 days	Nov 18, 1998 – Nov 20, 2002	Later state senator (2002–2010) and nominee for lieutenant governor (2010).
Cole L. Blease	South Carolina	Democratic	Oct 8, 1868	22 years, 48 days	Nov 25, 1890 – Nov 27, 1894, Jan 10, 1899 – Jan 8, 1901	Later state senator (1907–1909), state senate president pro tempore (1907–1909), governor (1911–1915) and U.S. senator (1925–1931).
Virgil Lilley	Texas	Democratic	Nov 25, 1908	22 years, 49 days	Jan 13, 1931 – Jan 10, 1933	^[62]
Sherrod Brown	Ohio	Democratic	Nov 9, 1952	22 years, 55 days	Jan 3, 1975 – Dec 31, 1982	Later state secretary of state (1983–1991) and U.S. senator (2007–present).
Curtis Hooks Brogden	North Carolina	Democratic	Nov 6, 1816	22 years, 56 days	Jan 1, 1839 – Jan 1, 1851, Jan 1, 1887 – Jan 1, 1889	Later state senator (1853–1857), lieutenant governor (1873–1874), governor (1874–1877) and U.S. representative (1877–1879). Switched to the Republican Party in 1867.
Curtis Hooks Brogden	North Carolina	Republican	Nov 6, 1816	22 years, 56 days	Jan 1, 1839 – Jan 1, 1851, Jan 1, 1887 – Jan 1, 1889
Henry L. Pinckney	South Carolina	Nullifier	Sep 24, 1794	22 years, 62 days	Nov 25, 1816 – Nov 24, 1828, Nov 22, 1830 – Mar 4, 1833	Son of Charles Pinckney. Later mayor of Charleston (1829–1830, 1831–1833, 1837–1840), speaker of the state House (1830–1833) and U.S. representative (1833–1837).
Benjamin Troy Woodall	Texas	Democratic	Jul 4, 1904	22 years, 71 days	Sep 13, 1926 – Jul 5, 1929	^[63]
Ryan Fecteau	Maine	Democratic	Sep 18, 1992	22 years, 76 days	Dec 3, 2014 – Dec 7, 2022	Later speaker of the state House (2020–2022).
Odis Allan Weldon	Texas	Democratic	Oct 25, 1914	22 years, 79 days	Jan 12, 1937 – Oct 1, 1940	^[64]
John Engler	Michigan	Republican	Oct 12, 1948	22 years, 81 days	Jan 1, 1971 – Jan 1, 1979	Later state senator (1979–1991), senate majority leader (1984–1991) and governor (1991–2003).
Christina Hagan	Ohio	Republican	Dec 11, 1988	22 years, 81 days	Mar 2, 2011 – Dec 31, 2018	Her father, John Hagan, previously represented the district.^[65]
Jack Edward Love	Texas	Democratic	Oct 23, 1918	22 years, 83 days	Jan 14, 1941 – Jan 14, 1947	^[66]
Peppy Blount	Texas	Democratic	Oct 19, 1924	22 years, 87 days	Jan 14, 1947 – Sep 26, 1951
Ratcliffe Hicks	Connecticut	Democratic	Oct 3, 1843	22 years, 92 days	Jan 3, 1866 – Jan 9, 1895	^[67]
Frederick W. Dallinger	Massachusetts	Republican	Oct 2, 1871	22 years, 93 days	Jan 3, 1894 – Jan 1, 1896	Later state senator (1896–1900) and U.S. representative (1915–1925, 1926–1932).
Gabe Leland	Michigan	Democratic	Sep 28, 1982	22 years, 95 days	Jan 1, 2005 – Jan 1, 2011	Son of Burton Leland.
Lester Clark	Texas	Democratic	Oct 5, 1916	22 years, 97 days	Jan 10, 1939 – Jan 9, 1945	^[68]
Adam Putnam	Florida	Republican	Jul 31, 1974	22 years, 97 days	Nov 5, 1996 – Nov 7, 2000	Later U.S. representative (2001–2011), state agriculture commissioner (2011–2019) and candidate for governor (2018).
Frank A. Day	Minnesota	Republican	Sep 30, 1855	22 years, 100 days	Jan 8, 1878 – Jan 6, 1879	Later state senator (1887–1895) and lieutenant governor (1895–1897).
William K. Hall	Kansas	Republican	Oct 1, 1942	22 years, 102 days	Jan 11, 1965 – Jan 9, 1967	^[69]^[70]
Colleen House	Michigan	Republican	Mar 17, 1952	22 years, 106 days	Jul 1, 1974 – Dec 31, 1976, Jan 1, 1983 – Dec 31, 1986	Later candidate for governor (1986).
Brandon Michael Newton	South Carolina	Republican	Jul 29, 1994	22 years, 108 days	Nov 14, 2016 – present
Bob Ware	Texas	Republican	Sep 21, 1956	22 years, 110 days	Jan 9, 1979 – Jan 11, 1983	^[71]^[72]
David Morales	Rhode Island	Democratic	Sep 16, 1998	22 years, 111 days	Jan 5, 2021 – present
Bakari Sellers	South Carolina	Democratic	Sep 18, 1984	22 years, 113 days	Jan 9, 2007 – Jan 6, 2015
Dick Guidry	Louisiana	Democratic	Sep 22, 1929	22 years, 114 days	Jan 14, 1952 – 1956, 1964 – 1976
William B. Rosenfield	Tennessee	[?]	Jul 15, 1894	22 years, 115 days	Nov 7, 1916 – Nov 5, 1918	^[73]
Patrick Joseph Kearns	Massachusetts	Democratic	Sep 8, 1912	22 years, 116 days	Jan 2, 1935 – Jan 6, 1937
John R. Lynch	Mississippi	Republican	Sep 10, 1847	22 years, 116 days	Jan 4, 1870 – 1873	Later speaker of the state House (1872–1873) and U.S. representative (1873–1877, 1882–1883).
Bob C. Riley	Arkansas	Democratic	Sep 18, 1924	22 years, 117 days	Jan 13, 1947 – Jan 8, 1951	Later lieutenant governor (1971–1975), candidate for governor (1974) and acting governor (1975).
Mike Cooney	Montana	Democratic	Sep 3, 1954	22 years, 122 days	Jan 3, 1977 – Jan 3, 1981	Later state secretary of state (1989–2001), candidate for governor (2000), state senator (2003–2011), state senate president (2007–2009), lieutenant governor (2016–2021) and nominee for governor (2020).
Thomas Hubbard Allen	Connecticut	Republican	Sep 4, 1862	22 years, 125 days	Jan 7, 1885 – Jan 5, 1887, Jan 9, 1889 – Jan 7, 1891, Jan 4, 1893 – Jan 6, 1897	^[74] Later state senator (1887–1889).
Arthur Clark	Massachusetts	Democratic	Aug 30, 1877	22 years, 126 days	Jan 3, 1900 – Jan 2, 1901
Stephen Morse Wheeler	New Hampshire	Republican	Aug 30, 1900	22 years, 126 days	Jan 3, 1923 – Jan 7, 1925	Later state attorney general (1942–1944).
Henry F. Ashurst	Arizona	Democratic	Aug 30, 1900	22 years, 127 days	Jan 18, 1897 – Jan 21, 1901	Later speaker of the House (1899–1901), territorial senator (1903–1905) and U.S. senator (1912–1941).
Stevens Thomson Mason	Virginia	Independent	Dec 29, 1760	22 years, 127 days	May 5, 1783 – May 3, 1784, Nov 11, 1794 – Nov 10, 1795	Son of Thomson Mason. Later state senator (1787–1791) and U.S. senator (1794–1803).
John W. Cummings	Massachusetts	Democratic	Aug 25, 1855	22 years, 130 days	Jan 2, 1878 – May 17, 1878	Later state senator (1883) and mayor of Fall River (1885, 1887–1888).
Samuel Aubrey Jones	Texas	Democratic	Sep 2, 1914	22 years, 132 days	Jan 12, 1937 – Dec 2, 1937	^[75]
Jayne Aylward	Kansas	Republican	Aug 28, 1956	22 years, 133 days	Jan 8, 1979 – Jan 14, 1991
Lloyd Lindgren	Washington	Democratic	Sep 3, 1912	22 years, 133 days	Jan 14, 1935 – Jan 9, 1939, Jan 8, 1945 – Jan 13, 1947	^[76]^[77]^[78]
Paul Hess	Kansas	Republican	Aug 29, 1948	22 years, 135 days	Jan 11, 1971 – Jan 8, 1973	^[79]
George W. McCrary	Iowa	Republican	Aug 29, 1835	22 years, 135 days	Jan 11, 1858 – Jan 8, 1860, Jan 13, 1862 – Jan 7, 1866	Later U.S. representative (1869–1877) and U.S. secretary of war (1877–1879).
Dennis Dollar	Mississippi	Democratic	Aug 22, 1953	22 years, 137 days	Jan 6, 1976 – Jan 3, 1984	^[80]^[81] Later candidate for state secretary of state (1983).^[82]
Joseph T. Robinson	Arkansas	Democratic	Aug 26, 1872	22 years, 141 days	Jan 14, 1895 – Jan 11, 1897	Later governor (1913), U.S. senator (1913–1937), senate minority leader (1923–1933), senate majority leader (1933–1937), candidate for president of the United States (1924) and nominee for vice president (1928).
Richard Tisei	Massachusetts	Republican	Aug 13, 1962	22 years, 143 days	Jan 3, 1985 – Jan 3, 1991	Later state senator (1991–2011), state senate minority leader (2007–2011) and nominee for lieutenant governor (2010).
Terry Gardiner	Alaska	Democratic	Aug 12, 1950	22 years, 149 days	Jan 8, 1973 – Jan 17, 1983	^[83]
Herman J. McDevitt	Idaho	Democratic	Jun 29, 1928	22 years, 155 days	Dec 1, 1950 –[?]	^[84]
Michael W. Morrissey	Massachusetts	Democratic	Aug 2, 1954	22 years, 156 days	Jan 5, 1977 – Jan 6, 1993	Later state senator (1993–2011).
Kesha Ram Hinsdale	Vermont	Democratic	Aug 2, 1986	22 years, 158 days	Jan 7, 2009 – May 11, 2016	Later state senator (2021–present).
Carl Mario D'Aquila	Minnesota	Republican	Aug 1, 1924	22 years, 159 days	Jan 7, 1947 – Jan 1, 1951	At the time the youngest-ever Minnesota state legislator.^[85]
Ernest F. Davis	Massachusetts	Democratic	Jul 30, 1892	22 years, 160 days	Jan 6, 1915 – Jan 5, 1916
Abel P. Upshur	Virginia	Federalist	Jun 17, 1790	22 years, 166 days	Nov 30, 1812 – May 16, 1813, Nov 29, 1824 – 1826	Son of state senator Littleton Upshur. Later United States Secretary of the Navy (1841–1843) and United States Secretary of State (1843–1844). Switched to the Jacksonian Democrat and Whig parties.
George C. Morris	Texas	Democratic	Jul 17, 1912	22 years, 175 days	Jan 8, 1935 – Jun 11, 1942	Later state senator (1942–1951).
Henry Beck	Maine	Democratic	Jun 6, 1986	22 years, 180 days	Dec 3, 2008 – Dec 7, 2016	Later state treasurer (2019–present).
Tom Davidson	Maine	Democratic	Jun 8, 1972	22 years, 182 days	Dec 7, 1994 – Dec 6, 2000	^[86]^[87]^[88]
Chris Pappas	New Hampshire	Democratic	Jun 4, 1980	22 years, 183 days	Dec 4, 2002 – Dec 6, 2006	Later member of the Executive Council (2013–2019) and U.S. representative (2019–present).
Jabez Lamar Monroe Curry	Alabama	Democratic	Jun 5, 1825	22 years, 184 days	Dec 6, 1847 – Nov 12, 1849, Nov 14, 1853 – Mar 4, 1857	Later U.S. representative (1857–1861), Provisional Confederate Congress deputy (1861–1862) and Confederate States representative (1862–1864).
Arnold F. Wellman Jr.	Connecticut	Democratic	Jul 3, 1954	22 years, 186 days	Jan 5, 1977 – Jan 5, 1983	^[89]
Katherine Kazarian	Rhode Island	Democratic	Jun 25, 1990	22 years, 190 days	Jan 1, 2013 – present
Will Haskell	Connecticut	Democratic	Jun 28, 1996	22 years, 195 days	Jan 9, 2019 – Jan 4, 2023
Heath Howard	New Hampshire	Democratic	May 26, 2000	22 years, 195 days	Dec 7, 2022 – present
Josie Tomkow	Florida	Republican	Oct 15, 1995	22 years, 198 days	May 1, 2018 – present
Travis Bennett	New Hampshire	Democratic	May 16, 1992	22 years, 201 days	Dec 3, 2014 – Dec 4, 2018	^[90]
Jake Blum	North Dakota	Republican	May 11, 1994	22 years, 204 days	Dec 1, 2016 – Oct 4, 2019
Cole Christensen	North Dakota	Republican	May 6, 1998	22 years, 209 days	Dec 1, 2020 – present
Clyde H. Smith	Maine	Republican	Jun 9, 1876	22 years, 209 days	Jan 4, 1899 – Jan 7, 1903, Jan 1, 1919 – Jan 3, 1923	Later state senator (1923–1929) and U.S. representative (1937–1940).
David Settle Reid	North Carolina	Democratic	Apr 19, 1813	22 years, 211 days	Nov 16, 1835 – Nov 21, 1842	Nephew of Thomas Settle. Later U.S. representative (1843–1847), governor (1851–1854) and U.S. senator (1854–1859).
Timothy F. Maloney	Maryland	Democratic	Jun 12, 1956	22 years, 212 days	Jan 10, 1979 – 1994	^[91]^[92]
Steven Wayne Long	South Carolina	Republican	Apr 14, 1994	22 years, 214 days	Nov 14, 2016 – present
Robert B. Anderson	Texas	Democratic	Jun 4, 1910	22 years, 220 days	Jan 10, 1933 – Sep 11, 1933	Later U.S. secretary of the navy (1953–1954), deputy secretary of defense (1954–1955) and secretary of the treasury (1957–1961). Switched to the Republican Party in 1956.
Kevin R. Ryan	South Carolina	Republican	Mar 30, 1988	22 years, 223 days	Nov 8, 2010 – Nov 12, 2012	^[93]^[94]^[95]
Carter Nordman	Iowa	Republican	May 27, 1998	22 years, 229 days	Jan 11, 2021 – present	^[96]
William A. Steiger	Wisconsin	Republican	May 15, 1938	22 years, 233 days	Jan 3, 1961 – 1965	Priorly chairman of the College Republican National Committee (1959–1961). Later U.S. representative (1967–1978).
John Sackett	Alaska	Republican	Jun 3, 1944	22 years, 234 days	Jan 23, 1967 – Jan 11, 1971, Jan 8, 1973 – Jan 19, 1987	^[97]^[83]
Norris Cotton	New Hampshire	Republican	May 11, 1900	22 years, 237 days	Jan 3, 1923 – Jan 7, 1925 1943–1947	Later speaker of the state House (1945–1947), U.S. representative (1947–1954), and U.S. senator (1954–1974, 1975).
Dave Woodward	Michigan	Democratic	May 9, 1976	22 years, 237 days	Jan 1, 1999 – Jan 1, 2005
Jonathan Zlotnik	Massachusetts	Democratic	May 7, 1990	22 years, 240 days	Jan 2, 2013 – present
Lucy Boyden	Vermont	Democratic	May 1, 2000	22 years, 248 days	Jan 4, 2023 – present
Doug Stang	Minnesota	Republican	May 4, 1974	22 years, 248 days	Jan 7, 1997 – Jun 30, 2004
Julie Slama	Nebraska	Republican	May 2, 1996	22 years, 252 days	Jan 9, 2019 – present	Third youngest ever Nebraska legislator,^[98] and youngest-ever woman.^[99]
Peter Forman	Massachusetts	Republican	Apr 28, 1958	22 years, 254 days	Jan 7, 1981 – Jan 4, 1995	Later minority leader (1991–1995) and candidate for secretary of the commonwealth (1994).
Randall Evans Jr.	Georgia	Democratic	May 3, 1906	22 years, 256 days	Jan 14, 1929 –[?]	Became the youngest-ever Georgia state representative and speaker of the House.^[100]
Joseph Prentis	Virginia	Independent	Jan 24, 1754	22 years, 257 days	Oct 7, 1776 – 1778, May 7, 1781 – Jan 8, 1788	Later speaker of the state House (1786–1788).
Calvin Goings	Washington	Democratic	Apr 3, 1973	22 years, 261 days	Dec 20, 1995 – Jan 8, 2001	At the time the youngest-ever Washington state senator.^[77]
Tom Scott	Connecticut	Republican	Apr 21, 1958	22 years, 261 days	Jan 7, 1981 – Jan 9, 1991	Later independent candidate for governor (1994).
Earl Ray Tomblin	West Virginia	Democratic	Mar 15, 1952	22 years, 261 days	Dec 1, 1974 – Dec 1, 1980	Later state senator (1980–2011), president of the state senate (1995–2011) and governor (2011–2017).
Chester G. Atkins	Massachusetts	Democratic	Apr 14, 1948	22 years, 267 days	Jan 6, 1971 – Jan 3, 1973	Later state senator (1973–1985) and U.S. representative (1985–1993).
Ben Barnes	Texas	Democratic	Apr 17, 1938	22 years, 268 days	Jan 10, 1961 – Jan 14, 1969	Later speaker of the state House (1965–1969), lieutenant governor (1969–1973) and candidate for governor (1972).
Joseph Norvell	Kansas	Democratic	Apr 14, 1950	22 years, 269 days	Jan 8, 1973 – Jan 10, 1977	Later state senator (1977–1989).
Joseph Pulitzer	Missouri	Republican	Apr 10, 1847	22 years, 270 days	Jan 5, 1870 – Mar 24, 1870	Since Pulitzer was only 22 years old, his swearing-in was in violation of the state constitution's age requirement of 24 years.^[57] Later U.S. representative (1885–1886). Co-founder of the Liberal Republican Party (1870); switched to the Democratic Party in 1874.
William Jennings Bryan Dorn	South Carolina	Democratic	Apr 14, 1916	22 years, 271 days	Jan 10, 1939 – Jun 8, 1940	Later state senator (1941–1942), U.S. representative (1947–1949, 1951–1974) and nominee for governor (1974).
Roy Hofheinz	Texas	Democratic	Apr 10, 1912	22 years, 273 days	Jan 8, 1935 – Jan 12, 1937	Later mayor of Houston (1953–1955).
Philip Davis Bryant	Mississippi	Democratic	Apr 5, 1937	22 years, 275 days	Jan 5, 1960 – Jan 2, 1968
Matt Kisber	Tennessee	Democratic	Jan 31, 1960	22 years, 275 days	Nov 2, 1982 – Nov 5, 2002
Avery Frix	Oklahoma	Republican	Mar 29, 1994	22 years, 286 days	Jan 9, 2017 – Nov 23, 2022
William Lowndes	South Carolina	Democratic-Republican	Feb 11, 1782	22 years, 289 days	Nov 26, 1804 – Nov 24, 1808	Later U.S. representative (1811–1822).
Kyle Hilbert	Oklahoma	Republican	Mar 23, 1994	22 years, 292 days	Jan 9, 2017 – present	Later speaker pro tempore (2022–present).
Susan Engeleiter	Wisconsin	Republican	Mar 18, 1952	22 years, 294 days	Jan 6, 1975 – Jan 3, 1979	Later state senator (1980–1989), nominee for U.S. senator (1988) and administrator of the Small Business Administration (1989–1991).
William M. McNicol	Connecticut	Democratic	Mar 16, 1896	22 years, 298 days	Jan 8, 1919 – Jan 5, 1921	^[101]
Hans Hunt	Wyoming	Republican	Mar 18, 1988	22 years, 299 days	Jan 11, 2011 – Oct 4, 2021
Joshua Putnam	South Carolina	Republican	Nov 10, 1988	22 years, 299 days	Sep 5, 2011 – Nov 12, 2018	^[102]^[103]^[104]
Trey Stewart	Maine	Republican	Feb 7, 1994	22 years, 304 days	Dec 7, 2016 – Dec 2, 2020	Later state senator (2020–present) and senate minority leader (2022–present).
Thomas Johnson Martin	Texas	Democratic	Mar 10, 1894	22 years, 305 days	Jan 9, 1917 – Sep 29, 1917, Jan 14, 1947 – Sep 21, 1948	^[105]
Lauren Plawecki	Michigan	Democratic	Jan 29, 1994	22 years, 305 days	Nov 29, 2016 – Jan 1, 2017	Daughter of Julie Plawecki.
James P. Hurrell	Massachusetts	Democratic	Mar 1, 1944	22 years, 309 days	Jan 4, 1967 – Jan 1, 1969, Jan 6, 1971 – Jan 5, 1977
Martin Olav Sabo	Minnesota	Democratic	Feb 28, 1938	22 years, 310 days	Jan 3, 1961 – 1978	Later speaker of the state House (1973–1979) and U.S. representative (1979–2007).
Edward B. Jackson	Virginia	Democratic-Republican	Jan 25, 1793	22 years, 313 days	Dec 4, 1815 – Dec 7, 1818	Son of George Jackson and younger brother of John G. Jackson. Later U.S. representative (1820–1823).
Jake Highfill	Iowa	Republican	Mar 3, 1990	22 years, 317 days	Jan 14, 2013 – Nov 6, 2018
Avery Bourne	Illinois	Republican	Mar 30, 1992	22 years, 321 days	Feb 14, 2015 – Jan 11, 2023	Youngest-ever Illinois legislator.^[106] Later candidate for lieutenant governor (2022) as the running mate of Richard Irvin.
Jim Joseph Carmichall	Texas	Democratic	Feb 27, 1930	22 years, 321 days	Jan 13, 1953 – Jan 8, 1957
Thomas A. Ledwith	New York	Democratic	Feb 14, 1840	22 years, 321 days	Jan 1, 1863 – Dec 31, 1863	Later candidate for mayor of New York City (1870) and state senator (1874–1875).
C. William O'Neill	Ohio	Republican	Feb 14, 1916	22 years, 321 days	Jan 1, 1939 – Jan 1, 1951	At the time the youngest-ever Ohio state representative.^[107] Later became the youngest-ever speaker of the Ohio House, youngest-ever Ohio attorney general and youngest-ever Ohio governor, and elected justice of the state Supreme Court at age 44.^[108]
Jim Jontz	Indiana	Democratic	Dec 18, 1951	22 years, 323 days	Nov 6, 1974 – Nov 7, 1984	Later state senator (1984–1986), U.S. representative (1987–1993) and nominee for U.S. senator (1994).
Chester Biesen	Washington	Republican	Feb 18, 1904	22 years, 326 days	Jan 10, 1927 – Jan 12, 1931	^[77]^[109]
LaFayette Duckett	Texas	Democratic	Feb 19, 1918	22 years, 330 days	Jan 14, 1941 – Jan 14, 1947
William Johnson	South Carolina	Democratic-Republican	Dec 27, 1771	22 years, 332 days	Nov 24, 1794 – Nov 24, 1800	Later speaker of the state House (1798–1800) and associate justice of the Supreme Court (1804–1834).
Gregory W. Sullivan	Massachusetts	Democratic	Jan 29, 1952	22 years, 337 days	Jan 1, 1975 – Jan 2, 1985
Samuel P. Walsh	Wisconsin	Republican	Jan 30, 1902	22 years, 341 days	Jan 5, 1925 – Jan 3, 1927	^[110]
Kenneth M. Lemanski	Massachusetts	Democratic	Jan 27, 1954	22 years, 344 days	Jan 5, 1977 – Jan 3, 1979, Jan 7, 1981 – Jan 6, 1993
Jim T. Lindsey	Texas	Democratic	Feb 1, 1926	22 years, 345 days	Jan 11, 1949 – Jan 8, 1957	Later speaker of the state House (1955–1957).
Keith R. McCall	Pennsylvania	Democratic	Dec 16, 1959	22 years, 350 days	Dec 1, 1982 – Dec 1, 2010	Son of Thomas J. McCall. Later speaker of the state House (2009–2010).
Joseph Grigsby Smyth	Texas	Democratic	Feb 25, 1847	22 years, 350 days	Feb 10, 1870 – Jan 14, 1873	Son of George W. Smyth.
Steven C. Brist	Wisconsin	Democratic	Jan 16, 1954	22 years, 353 days	Jan 3, 1977 – Jan 3, 1979, Jan 3, 1983 – Jan 5, 1987	^[111]
John Gray	Massachusetts	Republican	Jan 12, 1956	22 years, 356 days	Jan 3, 1979 – Jan 2, 1985
Harry T. Burn	Tennessee	Republican	Nov 12, 1895	22 years, 358 days	Nov 5, 1918 – Nov 7, 1922	Later state senator (1948–1952).
Andrew P. Quigley	Massachusetts	Democratic	Jan 13, 1926	22 years, 358 days	Jan 5, 1949 – Jan 3, 1951	Later state senator (1951–1957) and mayor of Chelsea (1952–1955).
Mildred Barber Abel	Wisconsin	Republican	Jan 9, 1902	22 years, 362 days	Jan 5, 1925 – Jan 3, 1927	^[112]
Leo E. Diehl	Massachusetts	Democratic	Jan 9, 1914	22 years, 363 days	Jan 6, 1937 – Jan 1, 1941
John Robinson	Virginia	Independent	Feb 3, 1705	22 years, 363 days	Feb 1, 1728 – May 8, 1769	Later speaker of the House (1738–1766).
Raymond O. Baker	Connecticut	Democratic	1896	22 years	Jan 8, 1919 – Jan 5, 1921, Jan 3, 1923 – Jan 7, 1925	^[113]
Lawrence E. Carlson	Indiana	Republican	1902	22 years	Nov 5, 1924 – Nov 7, 1928	^[114]^[115] Later state senator (1934–1942).
Steve Fowler	Nebraska	Democratic	1950	22 years	Jan 5, 1973 – Jan 5, 1983	^[23]
George T. Greig	Washington	Democratic	1914	22 years	Jan 11, 1937 – Jan 9, 1939	^[54]
Allan A. Hall	Connecticut	Democratic	1896	22 years	Jan 8, 1919 – Jan 5, 1921	^[116]
Ben Jickling	Vermont	Independent	1994	22 years	Jan 4, 2017 – Sep 1, 2019
Spencer Darwin Pettis	Missouri	Democratic-Republican	1802	22 years	Nov 15, 1824 – Jul 22, 1826	Since Pettis was only 22 years old, his swearing-in was in violation of the state constitution's age requirement of 24 years.^[117]^[57] Later Secretary of State of Missouri (1826–1828) and U.S. representative (1829–1831).
Arthur M. Proulx	Connecticut	Republican	1904	22 years	Jan 5, 1927 – Jan 9, 1929	^[118]
Andrew Rizner	Connecticut	Republican	1898	22 years	Jan 5, 1921 – Jan 3, 1923	^[119]
Michael B. Smith	Washington	Democratic	1912	22 years	Jan 14, 1935 – Jan 13, 1941	^[120]^[77]^[78]
Joseph Alston	South Carolina	Democratic-Republican	1779	22–23 years	Nov 22, 1802 – Nov 26, 1804, Nov 20, 1805 – Dec 10, 1812	Son of William Alston. Later speaker of the state House (1805–1808, 1809–1812) and governor (1812–1814).
Felix Grundy	Kentucky	Democratic-Republican	Sep 11, 1777	22–23 years	1800–1802, 1804–1806	Later U.S. representative (1811–1814), Tennessee state representative (1819–1825), U.S. senator (1829–1838, 1839–1840) and U.S. attorney general (1838–1839).
Mann Page	Virginia	Independent	1749	22–23 years	1772 – Dec 21, 1778	Delegate to the Continental Congress (1777–1778).
Dave Gruenes	Minnesota	Republican	Jan 6, 1958	23 years, 0 days	Jan 6, 1981 – Jan 2, 1995
Eugene G. Walker	Connecticut	Republican	Jan 2, 1888	23 years, 2 days	Jan 4, 1911 – Jan 6, 1915	^[121]^[122]
Thomas Edward Campbell	Arizona	Republican	Jan 18, 1878	23 years, 3 days	Jan 21, 1901 – Jan 19, 1903	Later governor (1917, 1919–1923).
Bradley Fritts	Illinois	Republican	Jan 8, 2000	23 years, 3 days	Jan 11, 2023 – present	Youngest-ever elected Illinois legislator, though Avery Bourne was younger at the time of her appointment.^[106]
Alan Schlesinger	Connecticut	Republican	Jan 4, 1958	23 years, 3 days	Jan 7, 1981 – Jan 6, 1993	Later mayor of Derby (1994–1998) and nominee for U.S. senator (2006).
Donald P. Hutchinson	Maryland	Democratic	Dec 31, 1945	23 years, 8 days	Jan 8, 1969 – Jan 8, 1975	Later state senator (1975–1978) and Baltimore County Executive (1978–1986).
Matt Windschitl	Iowa	Republican	Dec 30, 1983	23 years, 9 days	Jan 8, 2007 – present	Later speaker pro tempore (2014–2020) and majority leader (2020–present).
Sean Garballey	Massachusetts	Democratic	Feb 22, 1985	23 years, 11 days	Mar 4, 2008 – present
Edgar Gonzalez Jr.	Illinois	Democratic	Dec 25, 1996	23 years, 16 days	Jan 10, 2020 – present
Robert Y. Hayne	South Carolina	Democratic-Republican	Nov 10, 1791	23 years, 18 days	Nov 28, 1814 – Dec 18, 1818	Later speaker of the state House (1818), attorney general (1818–1822), U.S. senator (1823–1832), governor (1832–1834) and mayor of Charleston (1836–1837).
Bob Brown	Montana	Republican	Dec 11, 1947	23 years, 24 days	Jan 4, 1971 – 1974	Later state senator (1975–1997), senate president (1995–1996), state secretary of state (2001–2005) and nominee for governor (2004).
Clarence Mitchell III	Maryland	Democratic	Dec 14, 1939	23 years, 26 days	Jan 9, 1963 – 1967	Later state senator (1967–1986).
Joe Kelton Wells	Texas	Democratic	Dec 15, 1909	23 years, 26 days	Jan 10, 1933 – Jan 12, 1937	^[123]
Garrett Love	Kansas	Republican	Dec 12, 1987	23 years, 29 days	Jan 10, 2011 – Jan 9, 2017	Youngest-ever Kansas state senator.^[124]
Solomon Goldstein-Rose	Massachusetts	Democratic	Dec 5, 1993	23 years, 30 days	Jan 4, 2017 – Jan 2, 2019	Left the Democratic Party in February 2018.^[125]
Solomon Goldstein-Rose	Massachusetts	Independent	Dec 5, 1993	23 years, 30 days	Jan 4, 2017 – Jan 2, 2019	Left the Democratic Party in February 2018.^[125]
Thomas F. Grady	New York	Democratic	Nov 29, 1853	23 years, 33 days	Jan 1, 1877 – Dec 31, 1879	Later state senator (1882–1883, 1889, 1896–1912) and senate minority leader (1899–1910).
George Francis Monaghan	Michigan	Democratic	Nov 28, 1875	23 years, 37 days	Jan 4, 1899 – 1900	^[126]
Theodore W. Brevard Jr.	Florida	[?]	Aug 26, 1835	23 years, 39 days	Oct 4, 1858 – 1859	Son of state comptroller Theodorus W. Brevard. Later state senator (1865–1866).
Ben H. Butcher	West Virginia	Democratic	Oct 23, 1855	23 years, 39 days	Dec 1, 1878 – Dec 1, 1880, Dec 1, 1930 – Feb 12, 1937	^[127]^[128]^[129] Later Colorado state legislator.
George Burkman Norton	Massachusetts	Democratic	Nov 24, 1921	23 years, 40 days	Jan 3, 1945 – Jan 5, 1949
George C. Windrow	Wisconsin	Democratic	Nov 16, 1931	23 years, 48 days	Jan 3, 1955 – Jan 7, 1957	^[130]
William DuBois	Wyoming	Republican	Nov 15, 1879	23 years, 51 days	Jan 5, 1903 – Jan 4, 1909	Later state senator (1909–1913).
Jay Hooper	Vermont	Democratic	Nov 12, 1993	23 years, 53 days	Jan 4, 2017 – present	Son of Donald M. Hooper.
David Plawecki	Michigan	Democratic	Nov 8, 1947	23 years, 54 days	Jan 1, 1971 – Jan 1, 1983
Mike Blouin	Iowa	Democratic	Nov 7, 1945	23 years, 55 days	Jan 1, 1969 – Jan 1, 1973	Later state senator (1973–1975), U.S. representative (1975–1979) and candidate for governor (2006).
Stacey Dahl	North Dakota	Republican	Oct 7, 1981	23 years, 55 days	Dec 1, 2004 – Dec 1, 2012
William E. Kirkpatrick	Massachusetts	Republican	Nov 12, 1901	23 years, 56 days	Jan 7, 1925 – Jan 4, 1939
Josh Svaty	Kansas	Democratic	Nov 7, 1979	23 years, 62 days	Jan 8, 2003 – July 14, 2009	Later state secretary of agriculture (2009–2011) and candidate for governor (2018).
Theodore Roosevelt	New York	Republican	Oct 27, 1858	23 years, 66 days	Jan 1, 1882 – Dec 31, 1884	President of the United States (1901–1909). Youngest-ever U.S. president.
James D. Cole	Texas	Democratic	Nov 3, 1937	23 years, 68 days	Jan 10, 1961 – Jan 14, 1975	^[131]
Charles Royce Boss	Connecticut	Republican	Nov 1, 1871	23 years, 69 days	Jan 9, 1895 – Jan 6, 1897	^[132]
Richard Russell Jr.	Georgia	Democratic	Nov 2, 1897	23 years, 69 days	Jan 10, 1921 – Jan 12, 1931	Later governor (1931–1933), U.S. senator (1933–1971) and senate president pro tempore (1969–1971).
John C. Thompson Jr.	Wisconsin	Republican	Oct 25, 1901	23 years, 72 days	Jan 5, 1925 – Jan 3, 1927	^[133]
Arthur F. Gillen	Minnesota	Independent	Oct 10, 1919	23 years, 87 days	Jan 5, 1943 – Jan 1, 1951	^[134] Later state senator (1951–1959).
John Montgomery	Oklahoma	Republican	Aug 13, 1991	23 years, 88 days	Nov 9, 2014 – Nov 21, 2018	Later state senator (2018–2023).
Rick S. Bender	Washington	Democratic	Oct 9, 1949	23 years, 91 days	Jan 8, 1973 – Jan 10, 1983	^[77]^[135]
Ben Cardin	Maryland	Democratic	Oct 5, 1943	23 years, 92 days	Jan 5, 1967 – Jan 6, 1987	Son of Meyer Cardin. Later speaker of the state House (1979–1987), U.S. representative (1987–2007) and U.S. senator (2007–present).
Tim Baxter	New Hampshire	Republican	Aug 31, 1997	23 years, 93 days	Dec 2, 2020 – Dec 7, 2022
Edward Boland	Massachusetts	Democratic	Oct 1, 1911	23 years, 93 days	Jan 2, 1935 – Jan 1, 1941	Later U.S. representative (1953–1989).
Sammy D. Dalton	West Virginia	Democratic	Aug 29, 1951	23 years, 94 days	Dec 1, 1974 – Dec 1, 1986 Dec 1, 1988 – Dec 1, 1990 Dec 1, 1996 – Dec 1, 2000	Later state senator (1990–1994).
Jennifer Sullivan	Florida	Republican	Aug 1, 1991	23 years, 97 days	Nov 6, 2014 – present
Antonio Felipe	Connecticut	Democratic	Feb 2, 1996	23 years, 100 days	May 13, 2019 – present
Wayne Gibbens	Texas	Democratic	Oct 1, 1937	23 years, 101 days	Jan 10, 1961 – Jan 7, 1966
Selena Torres	Nevada	Democratic	Jul 27, 1995	23 years, 103 days	Nov 7, 2018 – present
J. Keith Arnold	Florida	Democratic	Jul 21, 1959	23 years, 104 days	Nov 2, 1982 – present
Thomas Bennett Jr.	South Carolina	Democratic-Republican	Aug 14, 1781	23 years, 104 days	Nov 26, 1804 – Nov 24, 1806, Nov 28, 1808 – Nov 26, 1810, Nov 23, 1812 – Dec 19, 1812 Sep 15, 1813 – Nov 23, 1818	Speaker of the state House (1814–1818), state senator (1820, 1837–1840) and governor (1820–1822).
Arthur L. Padrutt	Wisconsin	Progressive	Sep 26, 1917	23 years, 104 days	Jan 8, 1941 – Jan 3, 1945	^[136]
Clementa C. Pinckney	South Carolina	Democratic	Jul 30, 1973	23 years, 104 days	Nov 11, 1996 – Nov 13, 2000	Later state senator (2000–2015).
Arthur M. Brown	Connecticut	Republican	Sep 24, 1877	23 years, 107 days	Jan 9, 1901 – Jan 7, 1903	^[137] Later state senator (1903–1905) and candidate for governor (1936).
Mary Shadow	Tennessee	Democratic	Jul 17, 1925	23 years, 108 days	Nov 2, 1948 – Nov 4, 1952
Richard G. Beebe	Connecticut	Democratic	Sep 18, 1857	23 years, 109 days	Jan 5, 1881 – Jan 3, 1883, Jan 4, 1899 – Jan 9, 1901	^[138]
J. D. Lynch	Montana	Democratic	Sep 17, 1947	23 years, 109 days	Jan 4, 1971 – Jan 3, 1979	Later state senator (1982–2001).
Rodolphe G. Bessette	Massachusetts	Democratic	Sep 14, 1911	23 years, 110 days	Jan 2, 1935 – Jan 4, 1939 Jan 1, 1941 – Jan 3, 1951
Hugo Black III	Florida	Democratic	Jul 15, 1953	23 years, 110 days	Nov 2, 1976 – Nov 7, 1978	Grandson of Hugo Black.
Alfred D. Clark	New Hampshire	Republican	Sep 14, 1877	23 years, 110 days	Jan 2, 1901 –[?]	^[139]
Alfred A. Minahan Jr.	Massachusetts	Democratic	Sep 14, 1953	23 years, 113 days	Jan 5, 1977 – Jan 2, 1985
Riley Keaton	West Virginia	Republican	Aug 9, 1997	23 years, 114 days	Dec 1, 2020 – Oct 12, 2023
Jason Mumpower	Tennessee	Republican	Sep 22, 1973	23 years, 114 days	Jan 14, 1997 – Jan 11, 2011	Later minority leader (2007–2009), majority leader (2009–2011) and state comptroller of the treasury (2021–present).
Robert L. Nardone	Massachusetts	Democratic	Sep 13, 1953	23 years, 114 days	Jan 5, 1977 – Jan 3, 1979
Charles Finnell	Texas	Democratic	Sep 16, 1943	23 years, 116 days	Jan 10, 1967 – Jan 14, 1975, Jan 11, 1977 – Jan 12, 1999	^[140]^[141]
Daniel Pae	Oklahoma	Republican	Jul 25, 1995	23 years, 119 days	Nov 21, 2018 – present
Clinton Kersey	Texas	Democratic	Sep 11, 1915	23 years, 121 days	Jan 10, 1939 – Jan 12, 1943	^[142]
Rudolph Tesar	Nebraska	Democratic	Sep 2, 1907	23 years, 127 days	Jan 7, 1931 – 1935	At the time the youngest-ever Nebraska state legislator.^[143]^[144]
Jonathan Karlen	Montana	Democratic	Aug 27, 1999	23 years, 128 days	Jan 2, 2023 – present
Kerry Rich	Alabama	Republican	Jun 25, 1951	23 years, 134 days	Nov 6, 1974 – Nov 8, 1978, Nov 7, 1990 – Nov 9, 1994, Nov 3, 2010 – Nov 9, 2022
Cedric Gates	Hawaii	Democratic	Jun 22, 1993	23 years, 139 days	Nov 8, 2016 – present
Charles I. Quirk	Massachusetts	Democratic	Aug 15, 1871	23 years, 140 days	Jan 2, 1895 – Jan 5, 1898	Later state senator (1898–1899).
Tom Connally	Texas	Democratic	Aug 19, 1877	23 years, 142 days	Jan 8, 1901 – Jan 10, 1905	Later U.S. representative (1917–1929) and U.S. senator (1929–1953).
Caleb Ness	Maine	Republican	Jul 16, 1999	23 years, 144 days	Dec 7, 2022 – present	^[145]^[146]
Rick Quinn Jr.	South Carolina	Republican	Jun 22, 1965	23 years, 145 days	Nov 14, 1988 – Nov 8, 2004, Nov 8, 2010 – Dec 13, 2017	Later majority leader (1999–2004).
John Whitmire	Texas	Democratic	Aug 13, 1949	23 years, 149 days	Jan 9, 1973 – Jan 11, 1983	Later state senator (1983–2023) and mayor of Houston (2024–present).
Charles J. Faulkner	Virginia	National Republican	Jul 6, 1806	23 years, 154 days	Dec 7, 1829 – Dec 5, 1830, Dec 5, 1831 – Dec 1, 1833, Jan 1, 1838 – Dec 4, 1842	Later state delegate (1848–1849) and U.S. representative (1851–1859, 1875–1877).
Charles J. Faulkner	Virginia	Whig	Jul 6, 1806	23 years, 154 days
Frederick Joseph Duff	Texas	Democratic	Aug 6, 1859	23 years, 156 days	Jan 9, 1883 – Jan 13, 1885	^[147]
Frederick L. Zimmerman	New York	Democratic	Jul 28, 1906	23 years, 157 days	Jan 1, 1930 – Dec 31, 1935	^[148]
Hugh Parmer	Texas	Democratic	Aug 3, 1939	23 years, 158 days	Jan 8, 1963 – Jan 12, 1965	Later mayor of Fort Worth (1977–1979), state senator (1983–1991), state senate president pro tempore (1990) and nominee for U.S. senator (1990).
Daniel J. Kiley	Massachusetts	Democratic	Jul 27, 1874	23 years, 162 days	Jan 5, 1898 – Jan 4, 1899, Jan 1, 1902 – Jan 6, 1904
Thomas D'Alesandro Jr.	Maryland	Democratic	Aug 1, 1903	23 years, 164 days	Jan 12, 1927 – 1933	Later U.S. representative (1939–1947) and mayor of Baltimore (1947–1959).
Julian Ivey	Maryland	Democratic	Aug 3, 1995	23 years, 169 days	Jan 19, 2019 – present	Son of Glenn and Jolene Ivey.
Thomas H. Spurr Jr.	Massachusetts	Democratic	Jul 17, 1927	23 years, 170 days	Jan 3, 1951 – Jan 7, 1953
John W. Connelly	Massachusetts	Democratic	Jul 16, 1874	23 years, 173 days	Jan 5, 1898 – Jan 4, 1899
James J. Kiley	Massachusetts	Democratic	Jul 5, 1911	23 years, 181 days	Jan 2, 1935 – Jan 6, 1937
Louis J. Lefkowitz	New York	Republican	Jul 3, 1904	23 years, 182 days	Jan 1, 1928 – Dec 31, 1930	Later state attorney general (1957–1979) and nominee for mayor of New York City (1961).
Hunter Cantrell	Minnesota	Democratic	Jul 10, 1995	23 years, 182 days	Jan 8, 2019 – Jan 5, 2021
Melvin Ernest Nunnery	South Carolina	Democratic	May 11, 1951	23 years, 184 days	Nov 11, 1974 – Nov 8, 1982
Jason Bedrick	New Hampshire	Republican	Jun 5, 1983	23 years, 184 days	Dec 6, 2006 – Dec 3, 2008
Alan J. Dixon	Illinois	Democratic	Jul 7, 1927	23 years, 187 days	Jan 10, 1951 – Jan 1963	Later state senator (1963–1971), state treasurer (1971–1977), state secretary of state (1977–1981) and U.S. senator (1981–1993).
Nathaniel Macon	North Carolina	Independent	Dec 17, 1757	23 years, 188 days	Jun 23, 1781 – May 18, 1782, 1784	Later U.S. representative (1791–1815), speaker of the House (1801–1807), U.S. senator (1815–1828) and president pro tempore of the U.S. Senate (1826–1827).
Mitchel Perrizo Jr.	Iowa	Independent	Jul 3, 1917	23 years, 188 days	Jan 7, 1941 – 1942	^[149]^[150] Member of the Democratic Party.
Claude R. Porter	Iowa	Democratic	Jul 8, 1872	23 years, 189 days	Jan 13, 1896 – Jan 8, 1900	Later state senator (1900–1904) and nominee for governor (1906, 1910, 1918) and for U.S. senator (1920, 1926).
Russ Meekins Jr.	Alaska	Democratic	Jun 29, 1949	23 years, 193 days	Jan 8, 1973 – Jan 20, 1975, Jan 10, 1977 – Jan 17, 1983	^[151]
George M. Curtis	New York	Democratic	Jun 20, 1840	23 years, 195 days	Jan 1, 1864 – Dec 31, 1864, Jan 1, 1866 – Dec 31, 1866
Lindley Beckworth	Texas	Democratic	Jun 30, 1913	23 years, 196 days	Jan 12, 1937 – Jan 10, 1939	Later U.S. representative (1939–1953, 1957–1967) and state senator (1971–1973).
George Greene	Iowa	Democratic	Apr 15, 1817	23 years, 201 days	Nov 2, 1840 – Dec 4, 1842
Myron Sulzberger	New York	Democratic	Jun 14, 1878	23 years, 201 days	Jan 1, 1902 – Dec 31, 1903
Gregory G. Gruse	Michigan	Republican	Jun 20, 1961	23 years, 203 days	Jan 9, 1985 – Jan 14, 1987
William P. Nagle Jr.	Massachusetts	Democratic	Jun 10, 1951	23 years, 205 days	Jan 1, 1975 – Jan 1, 2003
George Nigh	Oklahoma	Democratic	Jun 9, 1927	23 years, 207 days	Jan 2, 1951 – Jan 6, 1959	Later lieutenant governor (1959–1963, 1967–1979) and governor (1963, 1979–1987).
John Paul O'Brien	Massachusetts	Democratic	Jun 10, 1937	23 years, 208 days	Jan 4, 1961 – Jan 2, 1963, Jan 6, 1965 – Jan 3, 1973
Reuben E. Senterfitt	Texas	Democratic	Jun 18, 1917	23 years, 210 days	Jan 14, 1941 – Jan 11, 1955	Later speaker of the state House (1951–1955).^[152]
John L. Donovan	Massachusetts	Democratic	Jun 3, 1876	23 years, 214 days	Jan 3, 1900 – Jan 1, 1902, Jan 5, 1910 – Jan 4, 1911, Jan 3, 1912 – Jan 4, 1919
James Buchanan	Pennsylvania	Federalist	Apr 23, 1791	23 years, 222 days	Dec 1, 1814 – Dec 1, 1816	President of the United States (1857–1861)
Adam Zabner	Iowa	Democratic	May 24, 1999	23 years, 222 days	Jan 1, 2023 – present
Edward Ryder	Ohio	Republican	May 4, 1948	23 years, 225 days	Dec 15, 1971 – Dec 31, 1972
Stephen A. Douglas	Illinois	Democratic	Apr 23, 1813	23 years, 226 days	Dec 5, 1836 –[?]	U.S. senator (1847–1861) and nominee for president of the United States (1860).
Pat Grassley	Iowa	Republican	May 26, 1983	23 years, 227 days	Jan 8, 2007 – present	Grandson of Chuck Grassley. Later speaker of the state House (2020–present).
John G. Rowland	Connecticut	Republican	May 24, 1957	23 years, 228 days	Jan 7, 1981 – Jan 9, 1985	Later U.S. representative (1985–1991) and governor (1995–2004).
Aaron Schock	Illinois	Republican	May 28, 1981	23 years, 229 days	Jan 12, 2005 – Jan 3, 2009	Later U.S. representative (2009–2015).
Richard N. Gottfried	New York	Democratic	May 16, 1947	23 years, 230 days	Jan 1, 1971 – Dec 31, 2022	Longest-serving state legislator in New York history.^[153]
Richard Baker	Louisiana	Democratic	May 22, 1948	23 years, 233 days	Jan 10, 1972 – Jan 1987	Switched to the Republican Party in 1986. Later U.S. representative (1987–2008)
Richard Baker	Louisiana	Republican	May 22, 1948	23 years, 233 days	Jan 10, 1972 – Jan 1987
Harry W. Haines	New Hampshire	Democratic	May 11, 1877	23 years, 236 days	Jan 2, 1901 –[?]	^[154]
J. Hamilton Lewis	Washington	Democratic	May 18, 1863	23 years, 237 days	Jan 10, 1887 – Jan 14, 1889	Later candidate for governor of Washington (1892), U.S. representative (1897–1899), candidate for governor of Illinois (1908), U.S. senator (1913–1919, 1931–1939) and nominee for governor of Illinois (1920).
J. Vander Stoep	Washington	Republican	May 20, 1957	23 years, 237 days	Jan 12, 1981 – Jan 12, 1987	^[77]
John Buckley	Connecticut	Republican	May 12, 1885	23 years, 239 days	Jan 6, 1909 – 1910 1921–1922
Thomas W. Ferry	Michigan	Republican	Jun 10, 1827	23 years, 240 days	Feb 5, 1851 – Jan 5, 1853	Later state senator (1857–1859), U.S. representative (1865–1871), U.S. senator (1871–1883) and president pro tempore of the U.S. Senate (1875–1879).
Steve Gunderson	Wisconsin	Republican	May 10, 1951	23 years, 241 days	Jan 6, 1975 – Jul 9, 1979	^[155]
Stephen M. Young	Ohio	Democratic	May 4, 1889	23 years, 242 days	Jan 1, 1913 – Jan 1, 1917	Later nominee for state attorney general (1922, 1956), U.S. representative (1933–1937, 1941–1943, 1949–1951) and U.S. senator (1959–1971).
John E. Magenis	Massachusetts	Republican	May 5, 1873	23 years, 246 days	Jan 6, 1897 – Jan 4, 1899
Maurice Bloch	New York	Democratic	Apr 26, 1891	23 years, 250 days	Jan 1, 1915 – Dec 31, 1929	Later minority leader (1924–1929).
Rubén Díaz Jr.	New York	Democratic	Apr 26, 1973	23 years, 250 days	Jan 1, 1997 – Apr 22, 2009	Son of Rubén Díaz Sr. Later borough president of the Bronx (2009–2021) and candidate for mayor of New York City (2021).
Carmine J. Marasco	New York	Democratic	Apr 26, 1891	23 years, 250 days	Jan 1, 1915 – Dec 31, 1915, Jan 1, 1935 – Dec 31, 1937, Jan 1, 1939 – Jan 14, 1941	^[156] Later state senator (1941–1944).
Tory Marie Arnberger	Kansas	Republican	May 3, 1993	23 years, 251 days	Jan 9, 2017 – present
Bill Finkbeiner	Washington	Democratic	May 5, 1969	23 years, 251 days	Jan 11, 1993 – Jan 9, 1995	Switched to the Republican Party in 1994. Later majority leader of the state senate.
Bill Finkbeiner	Washington	Republican	May 5, 1969	23 years, 251 days	Jan 11, 1993 – Jan 9, 1995
Don Kennard	Texas	Democratic	May 6, 1929	23 years, 252 days	Jan 13, 1953 – Jan 8, 1963	Later state senator (1963–1973) and state senate president pro tempore (1969).
Daniel Thomas McCormick	New Hampshire	Republican	Apr 25, 1877	23 years, 252 days	Jan 2, 1901 –[?]	^[157]
Thomas Beadle	North Dakota	Republican	Mar 22, 1987	23 years, 254 days	Dec 1, 2010 – Dec 1, 2020	Grandson of Earl Strinden and stepson of Tony Grindberg. Later state treasurer (2021–present).
Michael J. McGlynn	Massachusetts	Democratic	Apr 23, 1953	23 years, 257 days	Jan 5, 1977 – Jan 3, 1988	Later mayor of Medford (1988–2016).
Joshua Adjutant	New Hampshire	Democratic	Mar 22, 1995	23 years, 258 days	Dec 5, 2018 – Apr 1, 2023
John W. Costello	Massachusetts	Democratic	Apr 20, 1927	23 years, 258 days	Jan 3, 1951 – Jan 3, 1961	Later member of the governor's council (1961–1965).
Otto Kotouč	Nebraska	Democratic	Apr 22, 1885	23 years, 259 days	Jan 6, 1909 – Jan 8, 1913
Skyler Wheeler	Iowa	Republican	Apr 24, 1993	23 years, 260 days	Jan 9, 2017 – present
John J. O'Connor	Massachusetts	Democratic	Apr 12, 1871	23 years, 265 days	Jan 2, 1895 – Jan 6, 1897
Oscar Raymond Luhring	Indiana	Republican	Feb 11, 1879	23 years, 267 days	Nov 5, 1902 – Nov 9, 1904	Later U.S. representative (1919–1923).
Martin J. Schreiber	Wisconsin	Democratic	Apr 8, 1939	23 years, 268 days	Jan 1, 1963 – Jan 1, 1971	Youngest-ever Wisconsin state senator.^[158] Son of Martin E. Schreiber. Later lieutenant governor (1971–1977), governor (1977–1979) and candidate for mayor of Milwaukee (1988).
Henry Byron Noyes Jr.	Connecticut	Republican	Apr 15, 1871	23 years, 269 days	Jan 9, 1895 – Jan 6, 1897	^[159]
Peter Shapiro	New Jersey	Democratic	Apr 18, 1952	23 years, 270 days	Jan 13, 1976 – Jan 1979	Later Essex County Executive (1979–1987) and nominee for governor (1985).
Philip Erdman	Nebraska	Republican	Apr 7, 1977	23 years, 271 days	Jan 3, 2001 – Jan 7, 2009
Johnny Olszewski	Maryland	Democratic	Sep 10, 1982	23 years, 275 days	Jun 12, 2006 – Jan 14, 2015	Youngest-ever chairman of the Baltimore County Delegation.^[160]
Nabeela Syed	Illinois	Democratic	Apr 10, 1999	23 years, 276 days	Jan 11, 2023 – present
Casey Kozlowski	Ohio	Republican	Mar 31, 1987	23 years, 278 days	Jan 3, 2011 – Dec 31, 2012
Niraj Antani	Ohio	Republican	Feb 26, 1991	23 years, 279 days	Dec 2, 2014 – Dec 31, 2020	Later state senator (2021–present).
John Joseph Linehan	Massachusetts	Democratic	Mar 26, 1933	23 years, 282 days	Jan 2, 1957 – Jan 4, 1961
Harold Lloyd Murphy	Georgia	Democratic	Mar 31, 1927	23 years, 283 days	Jan 8, 1951 – Jan 9, 1961
Torrey Westrom	Minnesota	Republican	Mar 27, 1973	23 years, 286 days	Jan 7, 1997 – Jan 7, 2013	Later state senator (2013–present).
Corey Mock	North Dakota	Democratic	Feb 17, 1985	23 years, 288 days	Dec 1, 2008 – present	Later minority leader (2014–2018).
Anton N. Moursund	Texas	Democratic	Mar 26, 1877	23 years, 288 days	Jan 8, 1901 – Jan 13, 1903	Son of Albert Wadel Hansen Moursund.
Harry H. Ham	Massachusetts	Republican	Mar 16, 1883	23 years, 292 days	Jan 2, 1907 – Jan 4, 1911
Wesley C. Uhlman	Washington	Democratic	Mar 23, 1935	23 years, 295 days	Jan 12, 1959 – Jan 9, 1967	Later state senator (1967–1969) and mayor of Seattle (1969–1978).
Henry Converse Atwill	Massachusetts	Republican	Mar 11, 1872	23 years, 296 days	Jan 1, 1896 – Jan 4, 1899	Later state senator (1899–1901) and state attorney general (1915–1919).
Elizabeth M. Tamposi	New Hampshire	Republican	Feb 13, 1955	23 years, 296 days	Dec 6, 1978 – Dec 3, 1986	Later assistant secretary of state for consular affairs (1989–1992).
Tony Korioth	Texas	Democratic	Mar 16, 1933	23 years, 298 days	Jan 8, 1957 – Sep 10, 1961
Richard A. Westman	Vermont	Republican	Mar 13, 1959	23 years, 298 days	Jan 5, 1983 – Jan 2009	Later state senator (2011–present).
Wayne Stenehjem	North Dakota	Republican	Feb 5, 1953	23 years, 300 days	Dec 1, 1976 – Dec 1, 1980	Later state senator (1980–2000) and state attorney general (2000–2022).
Charles S. Fairfax	California	Democratic	Mar 8, 1829	23 years, 301 days	Jan 3, 1853 – Jan 1, 1855	Later speaker of the state House (1854–1855).
Thomas Settle	North Carolina	Democratic	Jan 23, 1831	23 years, 301 days	Nov 20, 1854 – Nov 19, 1860	Later speaker of the state House (1858–1860).
Archibald A. Stone Jr.	Minnesota	Independent	Mar 7, 1893	23 years, 301 days	Jan 2, 1917 – Jan 6, 1919	^[161]^[162]
Nicholas Paleologos	Massachusetts	Democratic	Mar 9, 1953	23 years, 302 days	Jan 5, 1977 – Jan 1, 1991
Andrew Stein	New York	Democratic	Mar 4, 1945	23 years, 303 days	Jan 1, 1969 – Dec 31, 1972	Later borough president of Manhattan (1978–1985) and president of the New York City Council (1986–1994).
Thomas Golden Jr.	Massachusetts	Democratic	Mar 5, 1971	23 years, 305 days	Jan 4, 1995 – May 26, 2022	Later city manager of Lowell (2022–present).
William J. Pennock	Washington	Democratic	Mar 10, 1915	23 years, 305 days	Jan 9, 1939 – Jan 13, 1947	^[77]^[163]^[164] Priorly member of the Communist Party. Later co-founder of the state Progressive Party (1948).^[165]
Victor Ashe	Tennessee	Republican	Jan 1, 1945	23 years, 309 days	Nov 5, 1968 – Nov 5, 1974	Later nominee for U.S. senator (1984) and mayor of Knoxville (1987–2003).
Dorothy Bradley	Montana	Democratic	Feb 24, 1947	23 years, 315 days	Jan 5, 1971 – Jan 3, 1979, Jan 7, 1985 – Jan 4, 1993	Later nominee for governor (1992).
David Lowry Swain	North Carolina	Independent	Jan 4, 1801	23 years, 316 days	Nov 15, 1824 – Jan 8, 1830	Later governor (1832–1835).
David Beasley	South Carolina	Democratic	Feb 26, 1957	23 years, 318 days	Jan 9, 1981 – Jan 10, 1995	Switched to the Republican Party in 1991. Later governor (1995–1999) and executive director of the World Food Programme (2017–present).
David Beasley	South Carolina	Republican	Feb 26, 1957	23 years, 318 days	Jan 9, 1981 – Jan 10, 1995
Kaniela Ing	Hawaii	Democratic	Dec 24, 1988	23 years, 319 days	Nov 7, 2012 – Nov 6, 2018
Arturo Alonso	Oklahoma	Democratic	Jan 7, 1999	23 years, 320 days	Nov 23, 2022 – present
Jeffrey D. Padden	Michigan	Democratic	Feb 22, 1951	23 years, 320 days	Jan 8, 1975 – Jan 1985
Jesse K. Dubois	Illinois	Whig	Jan 14, 1811	23 years, 321 days	Dec 1, 1834 – 1840, Dec 4, 1842 – 1844	Later state auditor of public accounts (1857–1864).
Peter Snowe	Maine	Republican	Jan 16, 1943	23 years, 325 days	Dec 7, 1966 – Apr 10, 1973
Patrick N. Hogan	Maryland	Republican	Feb 15, 1979	23 years, 327 days	Jan 8, 2003 – Jan 10, 2007 Jan 12, 2011 – Jan 14, 2015	^[166]
James Manley Head	Texas	Democratic	Feb 16, 1909	23 years, 329 days	Jan 10, 1933 – Jan 12, 1937	Later state senator (1937–1941).^[167]
William T. Barry	Kentucky	Democratic-Republican	Feb 5, 1784	23 years, 330 days	Jan 1, 1808 –[?]	Later U.S. representative (1810–1811), U.S. senator (1815–1816), state senator (1817–1821), lieutenant governor (1820–1824), commonwealth secretary of state (1824–1825), Democratic Party nominee for governor (1828) and U.S. postmaster general (1829–1835).
James Jackson	Georgia	Independent	Sep 21, 1757	23 years, 330 days	Aug 17, 1781 – 1783, Jan 4, 1785 – 1787, Jan 12, 1796 – 1798	Later governor -elect (1788, declined the position), U.S. representative (1789–1791), U.S. senator (1793–1795, 1801–1806) and governor (1798–1801).
James Jackson	Georgia	Democratic-Republican	Sep 21, 1757	23 years, 330 days
Donald L. Kimball	Iowa	Republican	Feb 15, 1933	23 years, 334 days	Jan 14, 1957 – Jan 8, 1961	^[168]
John McCandish King	Illinois	Republican	Feb 15, 1927	23 years, 334 days	Jan 15, 1951 – Jan 15, 1957
Bob Giersdorf	Alaska	Democratic	Feb 24, 1935	23 years, 336 days	Jan 26, 1959 – Jan 29, 1960, Feb 2, 1960 – Jan 23, 1961	^[169]
Rayford Price	Texas	Democratic	Feb 9, 1937	23 years, 336 days	Jan 10, 1961 – Jan 9, 1973	Later speaker of the state House (1972–1973).
James Monroe	Virginia	Independent	Apr 28, 1758	23 years, 338 days	Apr 1, 1782 – May 5, 1783, Oct 15, 1787 – Oct 19, 1789, Dec 3, 1810 – Jan 16, 1811	Founding Father of the United States and U.S. President
Marilinda Garcia	New Hampshire	Republican	Jan 1, 1983	23 years, 339 days	Dec 6, 2006 – Dec 3, 2008, Apr 29, 2009 – Dec 2, 2014
Kylie Oversen	North Dakota	Democratic	Feb 3, 1989	23 years, 340 days	Jan 8, 2013 – Dec 5, 2016	Elected Chair of the North Dakota Democratic-NPL at 26, making her the youngest U.S. state party chair at the time.^[170]
Jonathan Kreiss-Tomkins	Alaska	Democratic	Feb 7, 1989	23 years, 343 days	Jan 15, 2013 – Jan 17, 2023	^[83]
Walker Hines	Louisiana	Democratic	Jan 31, 1984	23 years, 348 days	Jan 14, 2008 – Jan 9, 2012	Switched to the Republican Party in November 2010.
Walker Hines	Louisiana	Republican	Jan 31, 1984	23 years, 348 days	Jan 14, 2008 – Jan 9, 2012	Switched to the Republican Party in November 2010.
Joe B. Cannon	Texas	Democratic	Jan 29, 1935	23 years, 349 days	Jan 13, 1959 – Jan 12, 1965	^[171]
Littleton Waller Tazewell	Virginia	Democratic-Republican	Dec 17, 1774	23 years, 351 days	Dec 3, 1798 – Dec 7, 1801, Dec 3, 1804 – Dec 1, 1806, Nov 11, 1816 – Dec 1, 1817	Son of Henry Tazewell. Later U.S. representative (1800–1801), U.S. senator (1824–1832), president pro tempore of the U.S. Senate (1832) and governor (1834–1836).
Carleton Fulbright	Missouri	Democratic	Jan 15, 1911	23 years, 352 days	Jan 2, 1935 – 1937	^[172]^[173] Since Fulbright was not yet 24 years old, his swearing-in was in violation of the state constitution's age requirement.^[57]
Ibra Charles Blackwood	South Carolina	Democratic	Nov 21, 1878	23 years, 354 days	Nov 10, 1902 – Nov 12, 1906	Later governor (1931–1935).
John Zampieri	Vermont	Democratic	Jan 19, 1941	23 years, 353 days	Jan 6, 1965 – Jan 14, 1985
Serranus Clinton Hastings	Iowa	Democratic	Nov 22, 1814	23 years, 355 days	Nov 12, 1838 – Nov 1, 1840	Later legislative councillor (1840–1846), U.S. representative (1846–1847) and attorney general of California (1852–1854).
Jeff Johnston	Oklahoma	Democratic	Jan 16, 1951	23 years, 356 days	Jan 7, 1975 – Jan 2, 1979	^[174]^[175]^[176]^[177] Later state senator (1979–1982).
Paul Haring	Texas	Democratic	Jan 18, 1937	23 years, 358 days	Jan 10, 1961 – Jan 10, 1967	Later switched to the Republican Party.
Blake Carpenter	Kansas	Republican	Jan 14, 1991	23 years, 363 days	Jan 12, 2015 – present	Later speaker pro tempore (2023–present).
William Van Ness Bay	Missouri	Democratic	Nov 23, 1818	23 years, 363 days	Nov 21, 1842 – Dec 25, 1848	Younger brother of Samuel M. Bay. Later U.S. representative (1849–1851).
Robert Robinson	Massachusetts	Democratic	Jan 4, 1889	23 years, 363 days	Jan 1, 1913 – Jan 5, 1916
Avery Anderson	Kansas	Republican	1997	23 years	Jan 11, 2021 – present
Mark S. DeFrancesco	Connecticut	Democratic	Dec 1949	23 years	Jan 3, 1973 – Jan 8, 1975	^[178]
Jim Donnelly	Maine	Republican	1967	23 years	Dec 5, 1990 – Dec 2, 1998
Wilfred A. Duquette	Connecticut	Democratic	1905	23 years	Jan 9, 1929 – Jan 7, 1931	^[179]
Karen Kilgarin	Nebraska	Democratic	1957	23 years	Jan 7, 1981 – 1984	At the time the youngest-ever female Nebraska legislator.^[180]^[181]
Maynard J. Kirby	Connecticut	Democratic	1925	23 years	Jan 5, 1949 – Jan 3, 1951	^[182]
Francis J. Pizzo	Connecticut	Democratic	1925	23 years	Jan 5, 1949 – Jan 3, 1951	^[182]^[183]
Vincent A. Roberti	Connecticut	Democratic	1953	23 years	Jan 5, 1977 – Jan 9, 1985	^[184]
Jackson Sayama	Hawaii	Democratic	1997	23 years	Nov 3, 2020 – present
Corbin Sullivan	Washington	Democratic	1911	23 years	Jan 14, 1935 – Jan 11, 1937	^[120]^[77]
Katie Zolnikov	Montana	Republican	1997	23 years	Oct 5, 2020 – present	Appointed following the resignation of her husband Daniel.^[185]
Philip Ludwell Jr.	Virginia	Independent	1672	23–24 years	1696 – 1697, 1698 – 1700	Son of Philip Ludwell.
Charles Cotesworth Pinckney	South Carolina	Independent	Feb 25, 1746	23–24 years	1770 –[?]	Son of Charles Pinckney. Later state senator, Federalist nominee for vice president of the United States (1800) and Federalist nominee for president of the United States (1804, 1808).
Christopher Robinson	Virginia	Independent	1681	23–24 years	1705 – 1715	Son of Christopher Robinson.
Joseph Medill Patterson	Illinois	Republican	Jan 6, 1879	24 years, 1 day	Jan 7, 1903 – Jan 4, 1905	Grandson of Joseph Medill.
John Philip Lanergan	Massachusetts	Democratic	Dec 30, 1874	24 years, 5 days	Jan 4, 1899 – Jan 2, 1901
Phil Cates	Texas	Democratic	Jan 6, 1947	24 years, 6 days	Jan 12, 1971 – Jan 9, 1979	^[186]^[187]
Joe Alexander	New Hampshire	Republican	Nov 28, 1994	24 years, 7 days	Dec 5, 2018 – present	^[188]
Greg Jergeson	Montana	Democratic	Dec 29, 1950	24 years, 8 days	Jan 6, 1975 – Jan 5, 1981, Jan 5, 1987 – Jan 6, 2003, Jan 7, 2013 – Jan 2, 2017
William Christopher Lunney	Massachusetts	Democratic	Dec 24, 1910	24 years, 9 days	Jan 2, 1935 – Jan 1, 1947
James Vernon Lea	Texas	Democratic	Jan 12, 1850	24 years, 11 days	Jan 23, 1874 – Apr 18, 1876	^[189]
George N. McKendry	Connecticut	Democratic	Dec 25, 1890	24 years, 12 days	Jan 6, 1915 – Jan 3, 1917	^[190]
Joseph McGrath	Massachusetts	Democratic	Dec 20, 1890	24 years, 17 days	Jan 6, 1915 – Jan 1, 1919	Later Boston City Councilor (1926–1928, 1930–1936), president of the Boston City Council (1931, 1933), chair of the state Democratic Party (1935–1939) and Collector of Customs for the Port of Boston (1938–1943).
James B. Adams	Texas	Democratic	Dec 21, 1926	24 years, 19 days	Jan 9, 1951 – Aug 6, 1951
Richard Mentor Johnson	Kentucky	Democratic-Republican	Oct 17, 1780	24 years, 20 days	Nov 6, 1804 – Nov 4, 1806, Dec 30, 1841 – Dec 29, 1843 Nov 5, 1850 – Nov 19, 1850	Later U.S. representative (1807–1819, 1829–1837), U.S. senator (1819–1829) and vice president (1837–1841). Joined the Democratic Party in 1828.
Richard Mentor Johnson	Kentucky	Democratic	Oct 17, 1780	24 years, 20 days
Jim Wright	Texas	Democratic	Dec 22, 1922	24 years, 23 days	Jan 14, 1947 – Jan 11, 1949	Later U.S. representative (1955–1989) and speaker of the U.S. House (1987–1989).
Jack Brooks	Texas	Democratic	Dec 18, 1922	24 years, 27 days	Jan 14, 1947 – Jan 9, 1951	Later U.S. representative (1953–1995).
Tip O'Neill	Massachusetts	Democratic	Dec 9, 1912	24 years, 28 days	Jan 6, 1937 – Jan 7, 1953	Later speaker of the state House (1949–1953), U.S. representative (1953–1987) and speaker of the U.S. House (1977–1987).
Boies Penrose	Pennsylvania	Republican	Nov 1, 1860	24 years, 30 days	Dec 1, 1884 – Dec 1, 1886	Grandson of Charles B. Penrose. Later state senator (1886–1897), state senate president pro tempore (1889–1891), U.S. senator (1897–1921) and chair of the state Republican Party (1903–1905).
Cathy Zeuske	Wisconsin	Republican	Dec 4, 1958	24 years, 30 days	Jan 3, 1983 – Jan 7, 1991	Later state treasurer (1991–1995) and secretary of the state department of revenue (1996–2001).
Steven Foti	Wisconsin	Republican	Dec 3, 1958	24 years, 31 days	Jan 3, 1983 – Jan 3, 2005	^[191]
John P. Burke	Massachusetts	Democratic	Dec 2, 1954	24 years, 32 days	Jan 3, 1979 – Jan 1, 1991
James Sturch	Arkansas	Republican	Dec 8, 1990	24 years, 35 days	Jan 12, 2015 – Jan 14, 2019	Later state senator (2019–present)
William Hunter	Rhode Island	Federalist	Nov 26, 1774	24 years, 36 days	Jan 1, 1799 – 1812, 1823 – 1825	Later U.S. senator (1811–1821).
Jim Lord	Minnesota	Democratic	Nov 26, 1948	24 years, 38 days	Jan 3, 1973 – Jan 7, 1975	Later state treasurer (1975–1983), becoming the youngest-ever Minnesota state constitutional officer.^[192]
Bill Gardner	New Hampshire	Democratic	Oct 26, 1948	24 years, 41 days	Dec 6, 1972 – Dec 1, 1976	Later state secretary of state (1976–2022).
Patrick William Nee	Massachusetts	Democratic	Nov 22, 1938	24 years, 41 days	Jan 2, 1963 – Jan 4, 1967
Linford Fenn Root	Connecticut	Democratic	Nov 22, 1868	24 years, 43 days	Jan 4, 1893 – Jan 9, 1895	^[193]
Joseph J. Norton	Massachusetts	Democratic	Nov 19, 1870	24 years, 44 days	Jan 2, 1895 – Jan 6, 1897
Amos Percy Scarborough	Texas	Democratic	Nov 27, 1908	24 years, 44 days	Jan 10, 1933 – Jan 12, 1937	^[194]
Franklin Pierce	New Hampshire	Democratic	Nov 23, 1804	24 years, 45 days	Jan 7, 1829 – Jan 2, 1833	President of the United States (1853–1857). At the time the youngest-ever U.S. president.
Emily Virgin	Oklahoma	Democratic	Oct 1, 1986	24 years, 47 days	Nov 17, 2010 – Nov 16, 2022	Later minority leader (2018–2022).
Mary Landrieu	Louisiana	Democratic	Nov 23, 1955	24 years, 52 days	Jan 14, 1980 – Jan 1988	Daughter of Moon Landrieu. Later U.S. senator (1997–2015).
Lewis Cass	Ohio	Democratic-Republican	Oct 9, 1782	24 years, 53 days	Dec 1, 1806 – 1807	Later governor of the Territory of Michigan (1813–1831), Secretary of War (1831–1836), U.S. senator (1845–1848, 1849–1857), Democratic Party nominee for president of the United States (1848), president pro tempore of the U.S. Senate (1854) and Secretary of State (1857–1860).
Laurence M. Keitt	South Carolina	Democratic	Oct 4, 1824	24 years, 54 days	Nov 27, 1848 – Mar 3, 1853	Later U.S. representative (1853–1856, 1856–1860) and member of the Provisional Congress of the Confederate States (1861–1862).
Ben Adamowski	Illinois	Democratic	Nov 20, 1906	24 years, 55 days	Jan 14, 1931 – Jan 8, 1941	Later candidate for U.S. senator (1940), candidate for mayor of Chicago (1955) and Republican Party nominee for mayor of Chicago (1963).
Theodore A. Glynn	Massachusetts	Democratic	Nov 8, 1881	24 years, 56 days	Jan 3, 1906 – Jan 2, 1907	Later candidate for mayor of Boston (1925).
Chuck Schumer	New York	Democratic	Nov 3, 1950	24 years, 59 days	Jan 1, 1975 – Dec 31, 1980	Later U.S. representative (1981–1999) and U.S. senator (1999–present).
Robert H. M. Davidson	Florida	Democratic	Sep 23, 1832	24 years, 62 days	Nov 24, 1856 – Nov 26, 1860	Later state senator (1860–1862) and U.S. representative (1877–1891).
Otis Theodore Dunagan	Texas	Democratic	Nov 9, 1908	24 years, 62 days	Jan 10, 1933 – Jan 12, 1937	^[195]
J. Chris Newton	Tennessee	Republican	Nov 9, 1970	24 years, 62 days	Jan 10, 1995 – Sep 1, 2005
Cornelius H. Toland	Massachusetts	Democratic	Nov 2, 1868	24 years, 63 days	Jan 4, 1893 – Jan 2, 1895
C. Frank Hitchcock	Connecticut	Republican	Oct 31, 1924	24 years, 66 days	Jan 5, 1949 – Jan 5, 1955	^[196]
Margaret Coughlin	Washington	Democratic	Nov 5, 1912	24 years, 67 days	Jan 11, 1937 – Jan 9, 1939	^[197]^[198]^[199]
David Berger	Wisconsin	Democratic	Oct 27, 1946	24 years, 69 days	Jan 4, 1971 – Jan 6, 1975	^[200]
John Gard	Wisconsin	Republican	Aug 3, 1963	24 years, 70 days	Oct 12, 1987 – Jan 3, 2007	Later speaker of the state House (2003–2007).
Andy Vargas	Massachusetts	Democratic	Sep 3, 1993	24 years, 73 days	Nov 15, 2017 – present
Terry Miller	Alaska	Republican	Nov 10, 1942	24 years, 74 days	Jan 23, 1967 – Jan 10, 1977	^[201]
Coleman Young II	Michigan	Democratic	Oct 18, 1982	24 years, 75 days	Jan 1, 2007 – Jan 1, 2011	Son of Coleman Young. Later candidate for mayor of Detroit (2009, 2017) and state senator (2011–2019).
Conrad Hilton	New Mexico	Republican	Dec 25, 1887	24 years, 77 days	Mar 11, 1912 – 1916
John J. Crittenden	Kentucky	Democratic-Republican	Sep 10, 1787	24 years, 83 days	Dec 2, 1811 – 1817	Later U.S. senator (appointed in 1814, at which point he was too young;^[202] served 1817–1819, 1835–1841, 1842–1848, 1855–1861), nominee for Supreme Court justice (1828–1829), U.S. attorney general (1841, 1850–1853), governor (1848–1850) and U.S. representative (1861–1863).
Abner Arrasmith	Kansas	Republican	Oct 15, 1844	24 years, 88 days	Jan 11, 1869 – Jan 9, 1871
Gregory Mayhew	Massachusetts	Republican	Sep 19, 1945	24 years, 88 days	Dec 16, 1969 – Jan 3, 1973	Succeeded his deceased father Benjamin [d] in office.^[203]^[204]
Edmund Dinis	Massachusetts	Democratic	Oct 4, 1924	24 years, 93 days	Jan 5, 1949 – 1951	Later state senator (1953–1957).
Brian Dempsey	Massachusetts	Democratic	Sep 30, 1966	24 years, 94 days	Jan 2, 1991 – July 19, 2017
Dave Obey	Wisconsin	Democratic	Oct 3, 1938	24 years, 96 days	Jan 7, 1963 – Apr 1, 1969	Later U.S. representative (1969–2011).
John P. McCormally	Kansas	Democratic	Oct 8, 1922	24 years, 97 days	Jan 13, 1947 – Jan 10, 1949	^[205]
John P. Varda	Wisconsin	Progressive	Oct 1, 1916	24 years, 97 days	Jan 6, 1941 – Jan 4, 1943
Dewey Young	Texas	Democratic	Oct 3, 1898	24 years, 98 days	Jan 9, 1923 – Jan 10, 1933	^[206]
Stephen McGrail	Massachusetts	Democratic	Sep 23, 1948	24 years, 102 days	Jan 3, 1973 – Jan 4, 1977
Joseph Edward Duffy	Massachusetts	Democratic	Sep 25, 1912	24 years, 103 days	Jan 6, 1937 – Jan 4, 1939 Jan 1, 1947 – Jan 5, 1949
Steven Zirnkilton	Maine	Republican	Aug 18, 1958	24 years, 105 days	Dec 1, 1982 – Dec 5, 1988, Dec 2, 1992 – Dec 7, 1994
William F. Galvin	Massachusetts	Democratic	Sep 17, 1950	24 years, 106 days	Jan 1, 1975 – Jan 2, 1991	Later secretary of the commonwealth (1995–present).
Walter Frank Woodul	Texas	Democratic	Sep 25, 1892	24 years, 106 days	Jan 9, 1917 – Sep 29, 1917	^[207] Later state senator (1929–1935), state senate president pro tempore (1933) and lieutenant governor (1935–1939).
Peter D. Bear	Wisconsin	Democratic	Sep 18, 1952	24 years, 107 days	Jan 3, 1977 – Jan 3, 1979	Later state senator (1979–1981).
Charles King	New York	Federalist	Mar 16, 1789	24 years, 107 days	Jul 1, 1813 – Jun 30, 1814	Son of Rufus King.
Elisha C. Andrews	New Hampshire	Democratic	Sep 16, 1876	24 years, 108 days	Jan 2, 1901 –[?]	^[208]
Melanie Stambaugh	Washington	Republican	Sep 25, 1990	24 years, 109 days	Jan 12, 2015 – Jan 14, 2019
Zach Brown	Montana	Democratic	Sep 18, 1990	24 years, 110 days	Jan 6, 2015 – Jan 4, 2021
Ed Kacir	Texas	Democratic	Sep 23, 1896	24 years, 110 days	Jan 11, 1921 – Jan 9, 1923	^[209]
William G. Arvanitis	Massachusetts	Republican	Sep 16, 1946	24 years, 112 days	Jan 6, 1971 – Jan 3, 1973
John W. Hartmann	New Jersey	Republican	Sep 22, 1967	24 years, 114 days	Jan 14, 1992 – Jan 11, 1994
Grant Harrison Shaft	North Dakota	Republican	Aug 9, 1962	24 years, 114 days	Dec 1, 1986 – Dec 1, 1990	^[210]
John J. Gilbride	Massachusetts	Democratic	Sep 14, 1889	24 years, 115 days	Jan 7, 1914 – Jan 5, 1916
David S. Day	Connecticut	Republican	Sep 8, 1880	24 years, 118 days	Jan 4, 1905 – Jan 9, 1907	^[211]
Bill Keating	Massachusetts	Democratic	Sep 6, 1952	24 years, 119 days	Jan 3, 1977 – Jan 3, 1985	Later state senator (1985–1999) and U.S. representative (2011–present).
Cynthia Lummis	Wyoming	Republican	Sep 10, 1954	24 years, 120 days	Jan 8, 1979 – Jan 3, 1983, Jan 7, 1985 – Jan 14, 1993	Later state senator (1993–1995), state treasurer (1999–2007), U.S. representative (2009–2017) and U.S. senator (2021–present).
Isaac Kinsey Wilson	Iowa	Republican	Sep 12, 1867	24 years, 121 days	Jan 11, 1892 – Jan 7, 1894	^[212]
Melvin Laird	Wisconsin	Republican	Sep 1, 1922	24 years, 122 days	Jan 1, 1947 – Jan 1, 1953	Succeeded his deceased father in office, becoming the youngest-ever Wisconsin state senator.^[213] Later U.S. representative (1953–1969), U.S. secretary of defense (1969–1973) and White House domestic affairs advisor (1973–1974).
Bruce E. Wetherbee	Massachusetts	Democratic	Sep 1, 1950	24 years, 122 days	Jan 1, 1975 – Jan 1, 1985
Edward Johnstone	Iowa	Democratic	Jul 4, 1815	24 years, 123 days	Nov 4, 1839 – Nov 1, 1840	^[214] Later territorial councilor (1840–1842).
Dave Norman Vigneault	Massachusetts	Democratic	Sep 3, 1936	24 years, 123 days	Jan 4, 1961 – Jan 6, 1971
Martin Sennet Conner	Mississippi	Democratic	Aug 31, 1891	24 years, 126 days	Jan 4, 1916 – Jan 1924	Later governor (1932–1936)
Thomas P. White	Massachusetts	Democratic	Aug 27, 1950	24 years, 127 days	Jan 1, 1975 – Jan 6, 1987	Later state senator (1987–1991).
Benjamin F. Williamson	Arkansas	Democratic	Sep 5, 1856	24 years, 127 days	Jan 10, 1881 –[?]	^[215]^[216]^[217]
Martin Thomas Reilly	Massachusetts	Democratic	Sep 1, 1956	24 years, 128 days	Jan 7, 1981 – Jan 4, 1989
Joseph P. Cooney	Connecticut	Democratic	Aug 30, 1906	24 years, 130 days	Jan 7, 1931 – Jan 9, 1935, Jan 6, 1937 – Jan 6, 1943	^[218]
Alisha Thomas Morgan	Georgia	Democratic	Sep 5, 1978	24 years, 130 days	Jan 13, 2003 – Jan 12, 2015
Bill Tippen	Texas	Democratic	Sep 6, 1922	24 years, 130 days	Jan 14, 1947 – Jan 9, 1951	Later state senator (1972–1973).
Mark Clodfelter	Michigan	Democratic	Aug 23, 1950	24 years, 131 days	Jan 1, 1975 – 1980
Justin Simmons	Pennsylvania	Republican	Aug 26, 1986	24 years, 131 days	Jan 4, 2011 – Jan 5, 2021
Anesa Kajtazović	Iowa	Democratic	Aug 30, 1986	24 years, 133 days	Jan 10, 2011 – Jan 11, 2015
Joe Fitzgibbon	Washington	Democratic	Aug 27, 1986	24 years, 136 days	Jan 10, 2011 – present
Shane Broadway	Arkansas	Democratic	Aug 30, 1972	24 years, 136 days	Jan 13, 1997 – Jan 13, 2003	Later speaker of the state House (2001–2003; youngest-ever speaker of the Arkansas House^[219]), state senator (2003–2011) and nominee for lieutenant governor (2010).
Herman M. Albert	New York	Democratic	Aug 15, 1901	24 years, 139 days	Jan 1, 1926 – Dec 31, 1933
Byron C. Ostby	Wisconsin	Republican	Aug 17, 1924	24 years, 139 days	Jan 3, 1949 – Jan 3, 1951	^[220]
Gary W. Laidig	Minnesota	Republican	Aug 15, 1948	24 years, 140 days	Jan 2, 1973 – Jan 3, 1983	Later state senator (1983–2001).
George Peddy	Texas	Democratic	Aug 22, 1892	24 years, 140 days	Jan 9, 1917 – Sep 10, 1917	Later candidate for U.S. senator (1922, 1948).
Kurt Zwikl	Pennsylvania	Democratic	Jun 28, 1949	24 years, 140 days	Nov 15, 1973 – Nov 30, 1984
Earl Blumenauer	Oregon	Democratic	Aug 16, 1948	24 years, 145 days	Jan 8, 1973 – Jan 1, 1979	Later U.S. representative (1996–present).
Fred B. Balzar	Nevada	Republican	Jun 15, 1880	24 years, 147 days	Nov 9, 1904 – Nov 7, 1906	Later state senator (1908–1916), state senate president pro tempore (1915), chairman of the state Republican Party (1924–1925) and governor (1927–1934).
J. C. W. Beckham	Kentucky	Democratic	Aug 5, 1869	24 years, 149 days	Jan 1, 1894 – Jan 1, 1898	Grandson of Charles A. Wickliffe and nephew of Robert C. Wickliffe. Became the youngest-ever Kentucky state legislator.^[221] Later lieutenant governor (1900), governor (1900–1907) and U.S. senator (1915–1921).
Alonzo Sledge	Texas	Republican	Aug 15, 1854	24 years, 152 days	Jan 14, 1879 – Jan 11, 1881
John L. Helm	Kentucky	Whig	Jul 4, 1802	24 years, 153 days	Dec 4, 1826 – Dec 31, 1844	Later state senator (1844–1848), lieutenant governor (1848–1850) and governor (1850–1851, 1867).
Khaleel Anderson	New York	Democratic	Jun 11, 1996	24 years, 154 days	Nov 12, 2020 – present
Mazzie Christensen	Missouri	Republican	Aug 3, 1998	24 years, 154 days	Jan 4, 2023 – present
Frank Foster	Michigan	Republican	Jul 31, 1986	24 years, 154 days	Jan 1, 2011 – Jan 1, 2015
Temple Lea Houston	Texas	Democratic	Aug 12, 1860	24 years, 154 days	Jan 13, 1885 – 1889	Youngest-ever Texas state senator.^[32] Son of Sam Houston.
Jim Slattery	Kansas	Democratic	Aug 4, 1948	24 years, 157 days	Jan 8, 1973 – Jan 8, 1979	Later U.S. representative (1983–1995).
Romaine Quinn	Wisconsin	Republican	Jul 30, 1990	24 years, 157 days	Jan 3, 2015 – Jan 4, 2021	Priorly mayor of Rice Lake (2010–2012). Later state senator (2023–present).
Robert F. Murray	Washington	Democratic	Aug 8, 1910	24 years, 159 days	Jan 14, 1935 – Jan 11, 1937	^[222]
David Nelson	Alaska	Republican	Aug 13, 1996	24 years, 159 days	Jan 19, 2021 – present
Daniel Elliott Huger	South Carolina	[?]	Jun 28, 1779	24 years, 160 days	Dec 5, 1803 – Nov 27, 1820, Nov 22, 1830 – Nov 26, 1832	Son of Daniel Huger and son-in-law of Arthur Middleton. Later state senator (1838–1842) and U.S. senator (1843–1845). Switched to the Democratic Party.
Jervis D. Brown Jr.	Connecticut	Republican	Jul 29, 1890	24 years, 161 days	Jan 6, 1915 – Jan 8, 1919	^[223]
Thurman P. Maine	Connecticut	Democratic	Jul 30, 1888	24 years, 162 days	Jan 8, 1913 – Jan 6, 1915	^[224]
Timothy Sullivan	New York	Democratic	Jul 23, 1862	24 years, 162 days	Jan 1, 1887 – Dec 31, 1893	Later state senator (1894–1902, 1909–1912) and U.S. representative (1903–1906, 1913).
Maurice R. Flynn	Massachusetts	Democratic	Jul 28, 1889	24 years, 163 days	Jan 7, 1914 – Jan 5, 1916
Kathleen A. Blatz	Minnesota	Republican	Jul 22, 1954	24 years, 165 days	Jan 3, 1979 – Jan 24, 1994	Youngest-ever female Minnesota state legislator.^[225] Daughter of state senator Jerome Blatz.
Denny Heck	Washington	Democratic	Jul 29, 1952	24 years, 165 days	Jan 10, 1977 – Jan 14, 1985	Later U.S. representative (2013–2021) and lieutenant governor (2021–present).
Thomas J. Henley	Indiana	Democratic	Jun 18, 1808	24 years, 170 days	Dec 5, 1832 – Dec 4, 1843	Later speaker of the state House (1842–1843), U.S. representative (1843–1849) and California state representative (1851–1853).
Morgan G. Sanders	Texas	Democratic	Jul 14, 1878	24 years, 183 days	Jan 13, 1903 – Jan 8, 1907	^[226] Later U.S. representative (1921–1939).
Corey Parent	Vermont	Republican	Jul 8, 1990	24 years, 183 days	Jan 7, 2015 – Jan 9, 2019	Later state senator (2019–2023).
Woodville Jefferson Rogers	Texas	Democratic	Jul 13, 1890	24 years, 183 days	Jan 12, 1915 – Oct 31, 1917	^[227] Later state senator (1921–1925) and state senate president pro tempore (1923).
Rebecca White	Vermont	Democratic	Jul 9, 1994	24 years, 184 days	Jan 9, 2019 – Jan 4, 2023	Later state senator (2023–present), becoming the youngest-ever Vermont state senator.
Ryan W. Pearson	Rhode Island	Democratic	Jun 30, 1988	24 years, 185 days	Jan 1, 2013 – present	Later majority leader (2023–present).
Adam Scanlon	Massachusetts	Democratic	Jul 5, 1996	24 years, 185 days	Jan 6, 2021 – present
Edwin W. Higgins	Connecticut	Republican	Jul 2, 1874	24 years, 186 days	Jan 4, 1899 – Jan 9, 1901	^[228] Later U.S. representative (1905–1913).
Beau LaFave	Michigan	Republican	Jun 27, 1992	24 years, 188 days	Jan 1, 2017 – Jan 1, 2023	Later candidate for state secretary of state (2022).
E. Ray Kirkpatrick	Texas	Democratic	Jul 9, 1922	24 years, 189 days	Jan 14, 1947 – Jan 13, 1953	^[229]
William Knowland	California	Republican	Jun 26, 1908	24 years, 190 days	Jan 2, 1933 – Jan 7, 1935	Son of Joseph R. Knowland. Later state senator (1935–1939), U.S. senator (1945–1959) and nominee for governor (1958).
Arthur L. Peterson	Wisconsin	Republican	Jun 27, 1926	24 years, 190 days	Jan 3, 1951 – Jan 3, 1955	^[230] Later Montana state representative (2001–2003).
Charles S. Sullivan	Massachusetts	Democratic	Jun 26, 1875	24 years, 191 days	Jan 3, 1900 – Jan 1, 1902	Later state senator (1902–1903, 1904–1905).
Zebulon Baird Vance	North Carolina	Whig	May 13, 1830	24 years, 191 days	Nov 20, 1854 – Nov 17, 1856	Later U.S. representative (1858–1861), governor (1862–1865, 1877–1879) and U.S. senator (1879–1894).
Lewis Miles	Iowa	Republican	Jun 30, 1845	24 years, 194 days	Jan 10, 1870 – Jan 7, 1872	Later state senator (1884–1888).
Silas D. Reed	Massachusetts	Republican	Jun 25, 1872	24 years, 195 days	Jan 6, 1897 – Jan 7, 1903	Later state senator (1905–1907, 1918–1923).
William E. Weeks	Massachusetts	Republican	Jun 23, 1880	24 years, 195 days	Jan 4, 1905 – Jan 5, 1910, Jan 5, 1916 – Jan 3, 1917	Later mayor of Everett (1918–1919).
Frank A. Manning	Massachusetts	Democratic	Jun 25, 1889	24 years, 196 days	Jan 7, 1914 – Jan 5, 1921
Dennis M. O'Brien	Pennsylvania	Republican	Jun 22, 1952	24 years, 196 days	Jan 4, 1977 – Nov 30, 1980, Jan 5, 1983 – Jan 2, 2012	Later speaker of the state House (2007–2008).
Leah Cole Allen	Massachusetts	Republican	Oct 15, 1988	24 years, 198 days	May 1, 2013 – Sep 28, 2015	Later nominee for lieutenant governor (2022).
Thomas E. Flaherty	Pennsylvania	Democratic	Jun 18, 1950	24 years, 199 days	Jan 3, 1975 – Jan 2, 1979	Later member of the Pittsburgh City Council (1980–1984), city controller (1984–2006) and chair of the Allegheny County Democratic Party (2002–2005).
Dirk Deaton	Missouri	Republican	Jun 14, 1994	24 years, 205 days	Jan 5, 2019 – present	Second youngest ever Missouri state representative.^[231]
John Vinich	Wyoming	Democratic	Jun 13, 1950	24 years, 207 days	Jan 6, 1975 – Jan 3, 1983	Later state senator (1983–1999) and nominee for U.S. senator (1988) and for governor (1998).
Charles A. Wickliffe	Kentucky	Democratic-Republican	Jun 8, 1788	24 years, 207 days	Jan 1, 1813 – Jan 1, 1815	Later U.S. representative (1823–1833, 1861–1863), lieutenant governor (1836–1839), acting governor (1839–1840) and U.S. postmaster general (1841–1845).
Mack McLarty	Arkansas	Democratic	Jun 14, 1946	24 years, 210 days	Jan 10, 1971 – Jan 8, 1973	Later chair of the state Democratic Party (1974–1976), White House chief of staff (1993–1994) and counselor to the president (1994–1998).
Robert Xavier Tivnan	Massachusetts	Democratic	Jun 9, 1924	24 years, 210 days	Jan 5, 1949 – Jan 7, 1959
George J. Wall	Massachusetts	Democratic	Jun 11, 1889	24 years, 210 days	Jan 7, 1914 – Jan 3, 1917
William Cabell Rives	Virginia	[?]	May 4, 1793	24 years, 211 days	Dec 1, 1817 – Dec 4, 1820, Dec 2, 1822 – Dec 1, 1823	Later U.S. representative (1823–1829), U.S. senator (1832–1834, 1836–1839, 1841–1845) and Confederate States representative (1864–1865).
Lorne R. Worthington	Iowa	Democratic	Jun 14, 1938	24 years, 214 days	Jan 14, 1963 – Jan 10, 1965	Later state auditor (1965–1967) and insurance commissioner (1967–1971).
Alvin M. Owsley	Texas	Democratic	Jun 11, 1888	24 years, 217 days	Jan 14, 1913 – Jan 12, 1915	Son of Alvin Clark Owsley. Later candidate for U.S. senator (1928).
Andy Welti	Minnesota	Democratic	May 28, 1980	24 years, 221 days	Jan 4, 2005 – Jan 3, 2011
Edmund L. Pitts	New York	Republican	May 23, 1839	24 years, 223 days	Jan 1, 1864 – Dec 31, 1868	Later speaker of the state House (1867), state senator (1880–1883, 1886–1887) and state senate president pro tempore (1886–1887).
Aaron M. I. Shinberg	Massachusetts	Democratic	May 27, 1940	24 years, 224 days	Jan 6, 1965 – Jan 1, 1969
Peter V. Daniel	Virginia	[?]	Apr 24, 1784	24 years, 225 days	Dec 5, 1808 – Dec 3, 1810	Later associate justice of the Supreme Court (1842–1860).
Owen A. Gallagher	Massachusetts	Democratic	May 24, 1902	24 years, 226 days	Jan 5, 1927 – Jan 4, 1933	Son of Daniel J. Gallagher. Later state senator (1933–1935).
John Y. Mason	Kentucky	[?]	Apr 18, 1799	24 years, 227 days	Dec 1, 1823 – 1827	Later state senator (1827–1831), U.S. representative (1831–1837), secretary of the navy (1844–1845, 1846–1849) and attorney general (1845–1846).
John R. McKernan Jr.	Maine	Republican	May 20, 1948	24 years, 228 days	Jan 3, 1973 – Jan 5, 1977	Later U.S. representative (1983–1987) and governor (1987–1995).
Loring M. Black Jr.	New York	Democratic	May 17, 1886	24 years, 229 days	Jan 1, 1911 – Dec 31, 1912, Jan 1, 1919 – Dec 31, 1920	Later U.S. representative (1923–1935).
Charles O. Engstrom	Massachusetts	Republican	May 19, 1875	24 years, 229 days	Jan 3, 1900 – Jan 2, 1901
Cathy McMorris Rodgers	Washington	Republican	May 22, 1969	24 years, 230 days	Jan 7, 1994 – Jan 3, 2005	Later U.S. representative (2005–present).
Anthony Michael Gallugi	Massachusetts	Democratic	May 16, 1948	24 years, 232 days	Jan 3, 1973 – Jan 3, 1979
Jeremiah Haralson	Alabama	Republican	Apr 1, 1846	24 years, 234 days	Nov 21, 1870 – Nov 18, 1872	Later state senator (1872–1875) and U.S. representative (1875–1877).
Frank T. Caprio	Rhode Island	Democratic	May 10, 1966	24 years, 236 days	Jan 1, 1991 – Jan 3, 1995	Son of Frank Caprio. Later state senator (1995–2007), state treasurer (2007–2011) and nominee for governor (2010).
Leo Giacometto	Montana	Republican	May 14, 1962	24 years, 236 days	Jan 5, 1987 – 1990	Later director of the state department of agriculture (1993–1995).
Bartholomew A. Brickley	Massachusetts	Democratic	May 7, 1883	24 years, 239 days	Jan 1, 1908 – Jan 5, 1910
Murray Watson Jr.	Texas	Democratic	May 14, 1932	24 years, 239 days	Jan 8, 1957 – Jan 8, 1963	Later state senator (1963–1973).
H. Joel Deckard	Indiana	Republican	Mar 7, 1942	24 years, 247 days	Nov 9, 1966 – Nov 6, 1974	Later U.S. representative (1979–1983) and Reform Party nominee for U.S. senator from Florida (2000).
Stephen Van Rensselaer	New York	Federalist	Nov 1, 1764	24 years, 247 days	Jul 6, 1789 – Jan 5, 1791	Later state senator (1791–1796), lieutenant governor (1795–1801), nominee for governor (1801, 1813) and U.S. representative (1822–1829).
Henry H. Lyman	Connecticut	Republican	May 4, 1888	24 years, 249 days	Jan 8, 1913 – Jan 6, 1915	^[232] Later state senator (1915–1919).
Grant Hodges	Arkansas	Republican	May 7, 1990	24 years, 250 days	Jan 12, 2015 – Jul 10, 2020
Paul F. Malloy	Massachusetts	Democratic	Apr 29, 1940	24 years, 252 days	Jan 6, 1965 – Jan 3, 1973
H. Edward Snow	Massachusetts	Republican	Apr 25, 1914	24 years, 254 days	Jan 4, 1939 – Jan 2, 1945, Jan 1, 1947 – Jan 4, 1955
Charles S. Tuttle	Connecticut	Republican	Apr 28, 1860	24 years, 254 days	Jan 7, 1885 – Jan 5, 1887	^[233]
Chuck Espy	Mississippi	Democratic	Apr 24, 1975	24 years, 255 days	Jan 4, 2000 – Jan 5, 2016	Son of Henry Espy and nephew of Mike Espy. Later mayor of Clarksdale (2017–present).
John N. Wozniak	Pennsylvania	Democratic	Mar 21, 1956	24 years, 255 days	Dec 1, 1980 – Dec 1, 1996	Later state senator (1996–2016).
James Langevin	Rhode Island	Democratic	Apr 22, 1964	24 years, 256 days	Jan 3, 1989 – Jan 3, 1995	Later state secretary of state (1995–2001) and U.S. representative (2001–2023).
Hamilton Fish II	New York	Republican	Apr 17, 1849	24 years, 259 days	Jan 1, 1874 – Dec 31, 1874, Jan 1, 1876 – Dec 31, 1879, Jan 1, 1889 – Dec 31, 1896	Son of Hamilton Fish. Later speaker of the state House (1895–1896) and U.S. representative (1909–1911).
Marty Seifert	Minnesota	Republican	Apr 23, 1972	24 years, 259 days	Jan 7, 1997 – Jan 3, 2011
Park Cannon	Georgia	Democratic	Jun 6, 1991	24 years, 261 days	Feb 22, 2016 – present
John Pierce Lynch	Massachusetts	Democratic	Apr 19, 1924	24 years, 261 days	Jan 5, 1949 – Jan 7, 1953
Michael Cormack	Iowa	Republican	Apr 22, 1970	24 years, 262 days	Jan 9, 1995 – Jan 12, 2003
Romulus Mitchell Saunders	North Carolina	Democratic-Republican	Mar 3, 1791	24 years, 262 days	Nov 20, 1815 – Dec 21, 1815, Nov 17, 1817 – Dec 25, 1820, Nov 20, 1848 – Dec 27, 1852	Later state senator (1816), speaker of the state House (1819–1820), U.S. representative (1821–1827, 1841–1845), and state attorney general (1828–1834).
Romulus Mitchell Saunders	North Carolina	Democratic	Mar 3, 1791	24 years, 262 days
Marcus Gaspard	Washington	Democratic	Apr 19, 1948	24 years, 264 days	Jan 8, 1973 – Jan 10, 1977	Later state senator (1977–1995).
Tyson Larson	Nebraska	Republican	Apr 16, 1986	24 years, 264 days	Jan 5, 2011 – Jan 9, 2019
David Lucas	Georgia	Democratic	Apr 23, 1950	24 years, 265 days	Jan 13, 1975 – Jul 1, 2011	Later state senator (2013–present).
Samuel J. Crawford	Kansas	Republican	Apr 10, 1835	24 years, 267 days	Jan 2, 1860 – 1861	Later governor (1865–1868).
Thomas W. Nevin	Colorado	Democratic	Feb 11, 1910	24 years, 269 days	Nov 7, 1934 – Nov 9, 1936	Since Nevin was only 24 years old, his swearing-in was in violation of the state constitution's age requirement of 25 years.^[234]
Alexander H. Stephens	Georgia	Whig	Feb 11, 1812	24 years, 270 days	Nov 7, 1836 – Dec 9, 1841	Later state senator (1842), U.S. representative (1843–1859, 1873–1882), member of the Provisional Congress of the Confederate States (1861–1862), vice president of the Confederate States (1862–1865) and governor of Georgia (1882–1883).
Ernest Keppler	Wisconsin	Republican	Apr 5, 1918	24 years, 274 days	Jan 4, 1943 – Jan 3, 1945	^[235]
Kenneth J. DeBeaussaert	Michigan	Democratic	Apr 10, 1954	24 years, 275 days	Jan 10, 1979 – Jan 1981, Jan 12, 1983 – Jan 1985, Jan 14, 1987 – Jan 1993	Later state senator (1995–2003).
Chuck Larson	Iowa	Republican	Apr 1, 1968	24 years, 275 days	Jan 1, 1993 – Jan 1, 2003	Later state senator (2003–2007).
A. P. Barrett	Texas	Democratic	Apr 12, 1878	24 years, 276 days	Jan 13, 1903 – Jan 10, 1905	Later state senator (1905–1909) and state senate president pro tempore (1907).
John E. Clark	Maryland	Democratic	Apr 1, 1910	24 years, 276 days	Jan 2, 1935 – 1947
Carl M. Iverson	Minnesota	Independent	Apr 6, 1894	24 years, 276 days	Jan 7, 1919 – Jan 5, 1931 Jan 3, 1939 – Jan 2, 1967	Later state senator (1931–1935).
Emily Cain	Maine	Democratic	Mar 29, 1980	24 years, 278 days	Jan 1, 2005 – Dec 5, 2012	Later minority leader (2010–2012), state senator (2012–2014) and executive director of EMILY's List (2017–present).
David Patterson Dyer	Missouri	Republican	Feb 12, 1838	24 years, 278 days	Nov 17, 1862 – Nov 19, 1866	Later U.S. representative (1869–1871) and nominee for governor (1880).
Don Wesely	Nebraska	Democratic	Mar 30, 1954	24 years, 279 days	Jan 3, 1979 – Jan 1999	At the time the third youngest ever Nebraska state legislator, and at his retirement the eighth-longest serving legislator in state history.^[236] Later mayor of Lincoln (1999–2003).
Phil Foster	Georgia	Democratic	Apr 4, 1958	24 years, 281 days	Jan 10, 1983 – Jan 14, 1991	^[237] Son of R. L. Foster.
Joe Schomacker	Minnesota	Republican	Mar 25, 1986	24 years, 284 days	Jan 3, 2011 – present
Spencer Igo	Minnesota	Republican	Mar 26, 1996	24 years, 285 days	Jan 5, 2021 – present
Stephen W. Doran	Massachusetts	Democratic	Mar 26, 1956	24 years, 287 days	Jan 7, 1981 – Jan 4, 1995
Marcus Harvey Townsend	Texas	Democratic	Mar 26, 1858	24 years, 289 days	Jan 9, 1883 – Jan 13, 1885, Jan 8, 1889 – Jan 10, 1893	^[238]
Henry Chamberlain	Michigan	Democratic	Mar 17, 1824	24 years, 290 days	Jan 1, 1849 – Apr 2, 1849	Later nominee for governor (1874).
Daniel T. McCarty	Florida	Democratic	Jan 18, 1912	24 years, 290 days	Nov 3, 1936 – Nov 3, 1942	Later speaker of the state House (1941–1943) and governor (1953).
Joe Crowley	New York	Democratic	March 16, 1962	24 years, 291 days	Jan 1, 1987 – Dec 31, 1998	Later U.S. representative (1999–2019).
James W. Husted	New York	Republican	Mar 16, 1870	24 years, 291 days	Jan 1, 1895 – Dec 31, 1897	Son of James W. Husted. Later U.S. representative (1915–1923).
Luke F. Cozans	New York	Democratic	Mar 15, 1836	24 years, 292 days	Jan 1, 1861 – Dec 31, 1861, Jan 1, 1877 – Dec 31, 1877	Later state senator (1864–1865).
Dan Gwadosky	Maine	Democratic	Feb 16, 1954	24 years, 293 days	Dec 6, 1978 – 1996	Later state secretary of state (1997–2005).
Arne H. Wicklund	Wisconsin	Democratic	Mar 13, 1926	24 years, 296 days	Jan 3, 1951 – Jan 5, 1955	^[239]
John L. Buckley	New York	Democratic	Mar 9, 1900	24 years, 298 days	Jan 1, 1925 – Dec 31, 1926	Later state senator (1927–1942).
Milton A. Candler	Georgia	Democratic	Jan 11, 1837	24 years, 299 days	Nov 6, 1861 – Nov 4, 1863	Son of Samuel Charles Candler. Later state senator (1868–1872) and U.S. representative (1875–1879).
William G. Giaccio	New York	Democratic	Mar 8, 1924	24 years, 299 days	Jan 1, 1949 – Dec 31, 1962
Thomas V. Murray	New Hampshire	Democratic	Mar 8, 1876	24 years, 300 days	Jan 2, 1901 –[?]	^[240]
James G. Birney	Kentucky	Democratic-Republican	Feb 4, 1792	24 years, 302 days	Dec 2, 1816 – Feb 5, 1817	Later Alabama state representative (1819–1820) and Liberty Party nominee for vice president of the United States (1840, 1844).
Ryan Kiesel	Oklahoma	Democratic	Jan 15, 1980	24 years, 307 days	Nov 17, 2004 – Nov 17, 2010
Dave L. Reed	Pennsylvania	Republican	Mar 6, 1978	24 years, 307 days	Jan 7, 2003 – Nov 30, 2018	Later majority leader (2015–2018).
Lee Cate	Oklahoma	Democratic	Jan 18, 1942	24 years, 309 days	Nov 23, 1966 – Oct 17, 1973	^[241]^[242]^[243] Later state senator (1973–1986).
William L. V. Newton	Massachusetts	Democratic	Feb 28, 1881	24 years, 309 days	Jan 3, 1906 – Jan 1, 1908, Jan 4, 1911 – Jan 3, 1912
Malcolm Wilson	New York	Republican	Feb 26, 1914	24 years, 309 days	Jan 1, 1939 – Dec 31, 1958	Later lieutenant governor (1959–1973) and governor (1973–1974).
Theodore A. Glynn Jr.	Massachusetts	Democratic	Feb 26, 1916	24 years, 310 days	Jan 1, 1941 – Jan 6, 1943	Son of Theodore A. Glynn.
George M. O'Connor	Wisconsin	Republican	Feb 27, 1902	24 years, 310 days	Jan 3, 1927 – Jan 4, 1933	^[244]
James A. Barcia	Michigan	Democratic	Feb 25, 1952	24 years, 311 days	Jan 1, 1977 – Dec 31, 1982	Later state senator (1983–1992, 2003–2010), U.S. representative (1993–2003) and Bay County Executive (2017–present).
Howard Doherty	Washington	Democratic	Mar 6, 1912	24 years, 311 days	Jan 11, 1937 – Jan 9, 1939, Jan 13, 1941 – Jan 11, 1943	^[199]^[245]
Alexander Contee Hanson	Maryland	Federalist	Feb 27, 1786	24 years, 316 days	Jan 9, 1811 – 1815	Son of Alexander Contee Hanson Sr. and grandson of John Hanson. Later U.S. representative (1813–1816) and U.S. senator (1816–1819).
Webster Ballinger	Iowa	Democratic	Feb 25, 1841	24 years, 317 days	Jan 8, 1866 – Jan 12, 1868, Jan 8, 1872 – Jan 11, 1874	^[246]
Dennis Bonnen	Texas	Republican	Mar 3, 1972	24 years, 317 days	Jan 14, 1997 – Jan 12, 2021	Later speaker pro tempore (2013–2019) and speaker of the state House (2019–2021).
Joseph J. Kelley	Massachusetts	Democratic	Feb 22, 1868	24 years, 317 days	Jan 4, 1893 – Jan 2, 1895
Frank Owen III	Texas	Democratic	Feb 25, 1926	24 years, 318 days	Jan 9, 1951 – Nov 5, 1954	Later state senator (1954–1965) and state senate president pro tempore (1959–1961).
William F. Winter	Mississippi	Democratic	Feb 21, 1923	24 years, 319 days	Jan 6, 1948 – Jan 3, 1956	Later lieutenant governor (1972–1976), governor (1980–1984) and nominee for U.S senator (1984).
Joseph Wenceslaus Bartunek	Ohio	Democratic	Feb 16, 1924	24 years, 320 days	Jan 1, 1949 – 1958 1959–1964	Later minority leader (1951–1958).^[247]
Elmer Baumann	Wisconsin	Socialist	Feb 15, 1902	24 years, 322 days	Jan 3, 1927 – Jan 7, 1929	^[248]
Tim Hickey	Massachusetts	Democratic	Feb 14, 1938	24 years, 322 days	Jan 2, 1963 – Jan 3, 1973
Alex Garza	Michigan	Democratic	Feb 13, 1994	24 years, 322 days	Jan 1, 2019 – Jan 1, 2023	Priorly mayor pro tempore of Taylor (2017–2019).
John I. Kleiber	Texas	Democratic	Feb 25, 1866	24 years, 322 days	Jan 13, 1891 – Jan 10, 1893	^[249]
Samantha Vang	Minnesota	Democratic	Feb 20, 1994	24 years, 322 days	Jan 8, 2019 – present
George S. Weed	New York	Democratic	Feb 13, 1862	24 years, 322 days	Jan 1, 1887 – Dec 31, 1888
Timothy Wesco	Indiana	Republican	Dec 16, 1985	24 years, 322 days	Nov 3, 2010 – present
Paul Alfonsi	Wisconsin	Republican	Feb 13, 1908	24 years, 325 days	Jan 3, 1933 – Jan 3, 1939, Jan 5, 1959 – Jan 4, 1971	Later speaker of the state House (1937–1939) and candidate for governor (1940). Switched to the Wisconsin Progressive Party in 1934, and back to the Republican Party in 1942.
		Progressive
		Republican
Richard P. Roche	Massachusetts	Democratic	Feb 15, 1952	24 years, 325 days	Jan 5, 1977 – Jan 7, 1981
Joseph C. Czerwinski	Wisconsin	Democratic	Feb 15, 1944	24 years, 326 days	Jan 6, 1969 – Jan 5, 1981	^[250]
Daniel J. O'Connell	Massachusetts	Democratic	Feb 13, 1908	24 years, 326 days	Jan 4, 1933 – Jan 2, 1935
Jake LaTurner	Kansas	Republican	Feb 17, 1988	24 years, 327 days	Jan 9, 2013 – Apr 25, 2017	Later state treasurer (2017–2021) and U.S. representative (2021–present).
John F. Buckley	Wisconsin	Republican	Feb 10, 1892	24 years, 328 days	Jan 3, 1917 – Jan 3, 1921	^[251]
George Hasay	Pennsylvania	Republican	Feb 7, 1948	24 years, 329 days	Jan 1, 1973 – Nov 30, 2006
Hugh C. Todd	Washington	Democratic	Feb 16, 1884	24 years, 330 days	Jan 11, 1909 – Jan 13, 1913	^[252]
William Nathaniel Rogers	New Hampshire	Democratic	Jan 10, 1892	24 years, 331 days	Dec 6, 1916 – Dec 1, 1920	Later U.S. representative (1923–1925, 1932–1937) and nominee for U.S. senator (1936).
Matthew Ruby	North Dakota	Republican	Jan 3, 1992	24 years, 333 days	Dec 1, 2016 – present	Son of Dan Ruby.
Branden Petersen	Minnesota	Republican	Feb 4, 1986	24 years, 334 days	Jan 4, 2011 – Jan 7, 2013	Later state senator (2013–2015).
George S. Burgess	Massachusetts	Republican	Jan 30, 1876	24 years, 337 days	Jan 2, 1901 – Jan 1, 1902
Calvin Say	Hawaii	Democratic	Feb 1, 1952	24 years, 337 days	Jan 3, 1977 – Nov 3, 2020	Later speaker of the state House (1999–2013).
Stoddard B. Colby	Vermont	Democratic	Feb 3, 1816	24 years, 338 days	Jan 6, 1841 – Jan 4, 1843	Later nominee for lieutenant governor (1855) and register of the Treasury (1864–1867).
Darrin Camilleri	Michigan	Democratic	Jan 28, 1992	24 years, 339 days	Jan 1, 2017 – Jan 1, 2023	Later state senator (2023–present).
Donald Betts	Kansas	Democratic	Feb 8, 1978	24 years, 339 days	Jan 13, 2003 – Jan 13, 2004	Later state senator (2004–2009).
Nelson Dewey	Wisconsin	Democratic	Dec 19, 1813	24 years, 342 days	Nov 26, 1838 – Dec 5, 1842	Later speaker of the House (1840), member of the territorial council (1842–1847), president of the council (1846–1847), governor (1848–1852) and state senator (1854–1856).
James E. Hagan	Massachusetts	Democratic	Jan 25, 1902	24 years, 345 days	Jan 5, 1927 – 1932	Later mayor of Somerville (1934–1936).
Aaron Regunberg	Rhode Island	Democratic	Jan 26, 1990	24 years, 345 days	Jan 6, 2015 – Jan 1, 2019	Nephew of Brad Schneider. Later candidate for lieutenant governor (2018).
Stan Jones	Indiana	Democratic	Nov 22, 1949	24 years, 349 days	Nov 6, 1974 – Nov 7, 1990
David C. Sanford	Connecticut	Republican	Jan 23, 1876	24 years, 351 days	Jan 9, 1901 – Jan 7, 1903	^[253]
Bob McEwen	Ohio	Republican	Jan 12, 1950	24 years, 354 days	Jan 1, 1975 – Dec 31, 1980	Later U.S. representative (1981–1993).
A. A. Ames	Minnesota	Democratic	Jan 18, 1842	24 years, 355 days	Jan 8, 1867 – Jan 6, 1868	Son of Alfred Elisha Ames. Later mayor of Minneapolis (1876–1877, 1882–1884, 1886–1889, 1901–1902) and nominee for governor (1886).
Thomas E. Bramlette	Kentucky	Whig	Jan 3, 1817	24 years, 362 days	Dec 31, 1841 – Mar 3, 1842	Son of state senator Ambrose S. Bramlette. Later governor (1863–1867).
Fernand St Germain	Rhode Island	Democratic	Jan 9, 1928	24 years, 363 days	Jan 6, 1953 – Jan 3, 1961	^[254] Later U.S. representative (1961–1989).
Robert T. Abernathy	Missouri	Democratic	1884	24 years	Jan 6, 1909 –[?]	^[231]^[255]
Richard W. Bowden	Washington	Democratic	1910	24 years	Jan 14, 1935 – Jan 11, 1937	^[256]
George Bradley	Minnesota	[?]	1833	24 years	Dec 2, 1857 – Dec 6, 1859	Later speaker of the state House (1858–1859).
Elmer L. Brown	Kentucky	Democratic	1889	24 years	Jan 1, 1914 – Jan 1, 1916	^[257]
Christopher Davis	Connecticut	Republican	1986	24 years	Jan 5, 2011 – Jan 6, 2021	^[258]
Charles E. Gaches	Washington	Republican	1882	24 years	Jan 14, 1907 – Jan 11, 1909	^[259]
J. Martin Hennessey	Connecticut	Democratic	1948	24 years	Jan 3, 1973 – Jan 8, 1975	^[260]
George W. Kavanagh	New York	Democratic	1880	24 years	Jan 1, 1905 – Dec 31, 1906	^[261]
Leo J. Kelly	Connecticut	Democratic	1888	24 years	Jan 8, 1913 – Jan 6, 1915	^[122]
Ernest T. Olson	Washington	Democratic	1914	24 years	Jan 9, 1939 – Jan 13, 1941	^[164]
Louis B. Rosenfeld	Connecticut	Republican	1896	24 years	Jan 5, 1921 – Jan 3, 1923	^[262]
Joseph W. Schwartz	Connecticut	Democratic	Dec 1950	24 years	Jan 8, 1975 – Jan 5, 1977	^[263]
Robert J. Stack	Connecticut	Republican	1898	24 years	Jan 8, 1923 – Jan 7, 1925	^[264]
Nicholas Tomassetti	Connecticut	Democratic	1914	24 years	Jan 4, 1939 – Jan 8, 1947	^[265]
Gino White	Idaho	Democratic	1962–1963	24 years	1987 – Dec 1, 1994	^[266]^[267]^[268]
Jim Yost	Idaho	Republican	1948	24 years	Dec 1, 1972 – Dec 1, 1976	^[23]^[266]^[269]
Robert P. Letcher	Kentucky	Democratic-Republican	Feb 10, 1788	24–25 years	1813–1815, 1817–1821	Later U.S. representative (1823–1833, 1834–1835) and governor (1840–1844).
George Mason III	Virginia	Independent	1690	24–25 years	1715 – 1726	Son of George Mason II.
James Moore Wayne	Georgia	Independent	1790	24–25 years	1815–1816	Later mayor of Savannah (1817–1819), U.S. representative (1829–1835) and associate justice of the Supreme Court (1835–1867).
Art Hamilton	Arizona	Democratic	Jan 19, 1948	25 years, 0 days	Jan 19, 1973 – Jan 11, 1999	Youngest-ever Arizona state legislator.^[270] Originally elected in 1972, Hamilton was nine days too young to take office at the start of the legislative session, and his seat was declared vacant. On his 25th birthday, the Maricopa County Board of Supervisors appointed him back to the seat.^[271]
J. Louis Leblanc	Massachusetts	Democratic	Jan 6, 1940	25 years, 0 days	Jan 6, 1965 – Jan 6, 1971
Patrick H. O'Connor	Massachusetts	Democratic	Jan 1, 1882	25 years, 1 day	Jan 2, 1907 – Jan 4, 1911
Tony Sertich	Minnesota	Democratic	Jan 2, 1976	25 years, 1 day	Jan 3, 2001 – Jan 13, 2011
William M. LaRovera	Connecticut	Democratic	Jan 3, 1924	25 years, 2 days	Jan 5, 1949 – Jan 3, 1951	^[272]
Ralph Collins Mahar	Massachusetts	Republican	Jan 4, 1912	25 years, 2 days	Jan 6, 1937 – Jan 3, 1945	Later state senator (1947–1962).
Sam Rayburn	Texas	Democratic	Jan 6, 1882	25 years, 2 days	Jan 8, 1907 – Jan 14, 1913	Later speaker of the state House (1911–1913), U.S. representative, and speaker of the U.S. House (1940–1947, 1949–1953, 1955–1961) and dean of the U.S. House (1953–1961).
Marshall Tankersley	Texas	Democratic	Jan 8, 1856	25 years, 3 days	Jan 11, 1881 – Jan 9, 1883, Jan 13, 1885 – Jan 11, 1887	^[273] Son of Benjamin Franklin Tankersley.
Harris Flanagin	Arkansas	Whig	Nov 3, 1817	25 years, 4 days	Nov 7, 1842 – Nov 4, 1844	Later state senator (1848–1850), governor (1862–1864) and governor in exile (1864–1865). Switched to the Democratic Party in 1856.
Thomas Oliver Martin	Texas	Democratic	Jan 9, 1866	25 years, 4 days	Jan 13, 1891 – Jan 10, 1893	^[274]
Diamond Garcia	Hawaii	Republican	Nov 3, 1997	25 years, 5 days	Nov 8, 2022 – present	Later chair of the state Republican Party (2023).
Robert Scoville	Connecticut	Republican	Jan 4, 1876	25 years, 5 days	Jan 9, 1901 – Jan 4, 1905	^[275]
Mark B. Cohen	Pennsylvania	Democratic	Jun 4, 1949	25 years, 6 days	Jun 10, 1974 – Nov 30, 2016
Richard Knowles	Massachusetts	Republican	Jan 1, 1889	25 years, 6 days	Jan 7, 1914 – Jan 5, 1916	Later state senator (1916–1918).
Emily O'Brien	North Dakota	Republican	Nov 25, 1991	25 years, 6 days	Dec 1, 2016 – present
Minthorne Tompkins	New York	Democratic	Dec 26, 1807	25 years, 6 days	Jan 1, 1833 – Jan 6, 1835	Son of Daniel D. Tompkins. Later state senator (1840–1842).
Harry Draper Hunt	Massachusetts	Republican	Dec 27, 1874	25 years, 7 days	Jan 3, 1900 – Jan 7, 1903
Louis Jenkins	Louisiana	Democratic	Jan 3, 1947	25 years, 7 days	Jan 10, 1972 – Jan 10, 2000	Switched to the Republican Party in 1994. Later candidate for U.S. senator (1996).
Louis Jenkins	Louisiana	Republican	Jan 3, 1947	25 years, 7 days	Jan 10, 1972 – Jan 10, 2000
Daniel P. Manning	New Hampshire	Democratic	Dec 24, 1875	25 years, 9 days	Jan 2, 1901 –[?]	^[240]
James K. O'Connor	New York	Republican	Dec 23, 1864	25 years, 9 days	Jan 1, 1890 – Dec 31, 1890	Later mayor of Utica (1920–1922). Switched to the Democratic Party.^[276]
R. Budd Dwyer	Pennsylvania	Republican	Nov 21, 1939	25 years, 10 days	Dec 1, 1964 – Nov 30, 1970	Later state senator (1970–1980) and state treasurer (1981–1987).
Robert Barnwell	South Carolina	Independent	Dec 21, 1761	25 years, 11 days	Jan 1, 1787 – Nov 4, 1788, Jan 15, 1790 – Dec 20, 1791, Nov 24, 1794 – Dec 19, 1801	Speaker of the House (1794–1797), state senator (1804–1805) and president of the state senate (1805).
Robert Barnwell	South Carolina	Federalist	Dec 21, 1761	25 years, 11 days
Albert D. Shaw	New York	Republican	Dec 21, 1841	25 years, 11 days	Jan 1, 1867 – Dec 31, 1867	Later U.S. representative (1900–1901).
Jon Hansen	South Dakota	Republican	Dec 30, 1985	25 years, 12 days	Jan 11, 2011 – Jan 8, 2013, Jan 8, 2019 – present	Later speaker pro tempore (2021–2023).
Jena Powell	Ohio	Republican	Dec 25, 1993	25 years, 13 days	Jan 7, 2019 – present
William R. Poage	Texas	Democratic	Dec 28, 1899	25 years, 16 days	Jan 13, 1925 – Jan 8, 1929	Later state senator (1931–1937) and U.S. representative (1937–1978).
Rick Nolan	Minnesota	Democratic	Dec 17, 1943	25 years, 21 days	Jan 7, 1969 – Jan 1, 1973	Nephew of Martin J. McGowan Jr. Later U.S. representative (1975–1981, 2013–2019) and candidate for lieutenant governor (2018) as the running mate of Lori Swanson.
John T. Stuart	Illinois	Whig	Nov 10, 1807	25 years, 23 days	Dec 3, 1832 – Dec 5, 1836	Later U.S. representative (1839–1843, 1863–1865) and Constitutional Union Party nominee for governor (1860). Switched to the Democratic Party.
Alfred Kelley	Ohio	Democratic-Republican	Nov 7, 1789	25 years, 24 days	Dec 1, 1814 – Jan 28, 1817, Dec 1, 1819 – 1820 1836–1839	Later mayor of Cleveland (1815–1816), state senator (1821–1823, 1844–1846, 1856–1857) and chairman of the state Whig Party (1840).
Alfred Kelley	Ohio	Whig	Nov 7, 1789	25 years, 24 days	Dec 1, 1814 – Jan 28, 1817, Dec 1, 1819 – 1820 1836–1839
Hamilton Fish III	New York	Progressive	Dec 7, 1888	25 years, 25 days	Jan 1, 1914 – Dec 31, 1916	Son of Hamilton Fish II. Later U.S. representative (1920–1945).
Gates Lucas	New Hampshire	Republican	Nov 10, 1993	25 years, 25 days	Dec 5, 2018 – Jul 14, 2020
George Outlaw	North Carolina	Democratic-Republican	Oct 25, 1771	25 years, 27 days	Nov 21, 1796 – Nov 18, 1799	Later state senator (1802–1803, 1806–1809, 1810–1815, 1817–1818, 1821–1825) and U.S. representative (1825).
Jeffrey A. Neubauer	Wisconsin	Democratic	Dec 8, 1955	25 years, 28 days	Jan 5, 1981 – Jan 3, 1989	^[277]
Hugo S. Sims Jr.	South Carolina	Democratic	Oct 14, 1921	25 years, 28 days	Nov 11, 1946 – Apr 15, 1948	Later U.S. representative (1949–1951).
James F. Creed	Massachusetts	Democratic	Dec 4, 1869	25 years, 29 days	Jan 2, 1895 – Jan 6, 1897
Thomson Mason	Virginia	Independent	Aug 14, 1733	25 years, 31 days	Sep 14, 1758 – Nov 3, 1761, Nov 6, 1766 – Jun 1, 1775, May 5, 1777 – May 1, 1780, May 5, 1783 – May 3, 1784	Son of George Mason III.
Jenna Netherton	South Dakota	Independent	Dec 11, 1985	25 years, 31 days	Jan 11, 2011 – Jan 13, 2015	Later state senator (2015–2018). Joined the Republican Party in 2012.
Jenna Netherton	South Dakota	Republican	Dec 11, 1985	25 years, 31 days	Jan 11, 2011 – Jan 13, 2015
Richard M. Scammon	New Hampshire	Democratic	Dec 6, 1859	25 years, 32 days	Jan 7, 1885 – Jan 5, 1887	Later state senator (1891–[?]).
Richard Lester Hull	Massachusetts	Republican	Nov 30, 1917	25 years, 37 days	Jan 6, 1943 – Jan 2, 1963
Jonathan Shell	Kentucky	Republican	Dec 1, 1987	25 years, 38 days	Jan 8, 2013 – Jan 1, 2019	Later majority leader (2017–2019) and state agriculture commissioner (2024–present).
Vincent Francis Cronin	Massachusetts	Democratic	Nov 25, 1925	25 years, 39 days	Jan 3, 1951 – Jan 7, 1953
Jerry Kleczka	Wisconsin	Democratic	Nov 26, 1943	25 years, 41 days	Jan 6, 1969 – Jan 6, 1975	Later state senator (1975–1984) and U.S. representative (1984–2005).
Wlnsvey Campos	Oregon	Democratic	Nov 30, 1995	25 years, 42 days	Jan 11, 2021 – Jan 9, 2023	Later state senator (2023–present), becoming the youngest-ever Oregon state senator.
Francis X. Quigley	Massachusetts	Democratic	Nov 20, 1882	25 years, 42 days	Jan 1, 1908 – Jan 4, 1911	Later state senator (1911–1914).
John Gary Evans	South Carolina	Democratic	Oct 15, 1863	25 years, 43 days	Nov 27, 1888 – Nov 22, 1892, Jan 9, 1923 – Jan 13, 1925	Youngest South Carolina state representative, state senator and governor.^[278]
Tommy Thompson	Wisconsin	Republican	Nov 19, 1941	25 years, 44 days	Jan 2, 1967 – Jan 5, 1987	Later minority leader (1981–1987), governor (1987–2001) and U.S. secretary of health and human services (2001–2005).
Larry Young	Maryland	Democratic	Nov 25, 1949	25 years, 44 days	Jan 8, 1975 – Jan 13, 1988	Later state senator (1988–1998) and chair of the Baltimore City Delegation (1988–1989).
Marshall B. Booker	Virginia	Democratic	Nov 26, 1880	25 years, 45 days	Jan 10, 1906 – Jan 8, 1908	Later state senator (1919–1928).
Caleb F. Buckley	New York	Democratic	Nov 16, 1841	25 years, 46 days	Jan 1, 1867 – Dec 31, 1867
Tim Penny	Minnesota	Democratic	Nov 19, 1951	25 years, 46 days	Jan 4, 1977 – Jan 3, 1983	Later U.S. representative (1983–1995) and Independence Party nominee for governor (2002).
George Washington Adams	Massachusetts	Democratic-Republican	Apr 12, 1801	25 years, 49 days	May 31, 1826 – 1827	Son of president John Quincy Adams and grandson of president John Adams.
Cassius Marcellus Clay	Kentucky	Whig	Oct 19, 1810	25 years, 50 days	Dec 8, 1835 – Dec 3, 1838	Son of Green Clay. Co-founder of the state Republican Party (1856); later switched to the Liberal Republican Party (1872), to the Democratic Party (1876) and again to the Republican Party (1884).
Cleo Fields	Louisiana	Democratic	Nov 22, 1962	25 years, 50 days	Jan 11, 1988 – Jan 3, 1993, Jan 12, 1998 – Jan 14, 2008, Jan 13, 2020 – present	Later U.S. representative (1993–1997) and candidate for governor (1995).
James W. Pridham	New Hampshire	Democratic	Nov 13, 1875	25 years, 50 days	Jan 2, 1901 –[?]	^[279]
Eugene S. Ives	New York	Democratic	Nov 11, 1859	25 years, 51 days	Jan 1, 1885 – Dec 31, 1885, Jan 1, 1887 – Dec 31, 1887	Nephew of Thomas Jenkins Semmes. Later state senator (1888–1891), Arizona territorial councilor (1901–1905) and president of the Arizona Council (1903–1905).
Nicholas F. Lucas	Wisconsin	Republican	Dec 15, 1895	25 years, 52 days	Jan 3, 1921 – Jan 3, 1923	^[280]
Arthur C. Tompkins	Texas	Republican	Nov 19, 1855	25 years, 53 days	Jan 11, 1881 – Jan 9, 1883, Feb 15, 1895 – Jan 12, 1897, Jan 10, 1899 – Jan 8, 1901	^[281]
Carter Braxton	Virginia	Independent	Sep 10, 1736	25 years, 54 days	Nov 3, 1761 – Jul 20, 1771, Jun 1, 1775 – Feb 1776, Oct 7, 1776 – May 4, 1778, May 3, 1779 – May 3, 1784, Oct 17, 1785 – Oct 16, 1786, Oct 18, 1790 – Nov 10 1795	Signer of the Declaration of Independence and Founding Father.
Carl Vinson	Georgia	Democratic	Nov 18, 1883	25 years, 54 days	Jan 11, 1909 – Nov 3, 1914	Later U.S. representative (1914–1965) and dean of the U.S. House (1961–1965).
William F. Sheehan	New York	Democratic	Nov 6, 1859	25 years, 56 days	Jan 1, 1885 – Dec 31, 1891	Later minority leader (1886–1890), speaker of the state House (1891), lieutenant governor (1892–1894) and candidate for U.S. senator (1911).
John A. Rowan	Massachusetts	Democratic	Nov 9, 1872	25 years, 57 days	Jan 5, 1898 – Jan 4, 1899
Robert C. Brown	Massachusetts	Republican	Nov 5, 1867	25 years, 60 days	Jan 4, 1893 – Jan 2, 1895
Frederick Clement Hailer Jr.	Massachusetts	Democratic	Nov 3, 1923	25 years, 63 days	Jan 5, 1949 – Jan 7, 1953
Dan Zwonitzer	Wyoming	Republican	Oct 30, 1979	25 years, 65 days	Jan 3, 2005 – present	Son of David Zwonitzer.
Ron Hein	Kansas	Republican	Nov 7, 1949	25 years, 67 days	Jan 13, 1975 – Jan 10, 1977	Later state senator (1977–1985).
Cornelius Leary	Maryland	Whig	Oct 22, 1813	25 years, 70 days	Dec 31, 1838 – Dec 30, 1839	Later U.S. representative (1861–1863). Switched to the Know Nothing and Unionist parties.^[282]
Ed Feighan	Ohio	Democratic	Oct 22, 1947	25 years, 71 days	Jan 1, 1973 – Dec 31, 1978	Nephew of Michael A. Feighan. Later U.S. representative (1983–1993).
Michael E. McLaughlin	Massachusetts	Democratic	Oct 27, 1945	25 years, 71 days	Jan 6, 1971 – Jan 5, 1977
William M. McMorrow	Massachusetts	Democratic	Oct 22, 1885	25 years, 74 days	Jan 4, 1911 – Jan 1, 1913, Jan 7, 1914 – Jan 5, 1916, Jan 2, 1929 – Jan 7, 1931
Jon Rotenberg	Massachusetts	Democratic	Oct 21, 1947	25 years, 74 days	Jan 3, 1973 – Jan 1, 1975
Thomas Guastello	Michigan	Democratic	Oct 25, 1943	25 years, 75 days	Jan 8, 1969 – Jan 8, 1975	Later state senator (1975–1983).
James Skoufis	New York	Democratic	Oct 18, 1987	25 years, 75 days	Jan 1, 2013 – Dec 31, 2018	Later state senator (2019–present).
Donald Phelps Marr	Texas	Democratic	Oct 27, 1855	25 years, 76 days	Jan 11, 1881 – Jun 23, 1881	^[283]^[284]
John Norquist	Wisconsin	Democratic	Oct 22, 1949	25 years, 76 days	Jan 6, 1975 – Jan 3, 1983	Later state senator (1983–1988) and mayor of Milwaukee (1988–2004).
Henry Bellmon	Oklahoma	Republican	Sep 3, 1921	25 years, 78 days	Nov 20, 1946 – Nov 17, 1948	Later governor (1963–1967, 1987–1991) and U.S. senator (1969–1981).
Ryan Guillen	Texas	Democratic	Oct 27, 1977	25 years, 79 days	Jan 14, 2003 – present	Switched to the Republican Party in November 2021.^[285]
Ryan Guillen	Texas	Republican	Oct 27, 1977	25 years, 79 days	Jan 14, 2003 – present	Switched to the Republican Party in November 2021.^[285]
Donovan W. Burington	Iowa	Democratic	Oct 25, 1909	25 years, 81 days	Jan 14, 1935 – Jan 10, 1937	^[286]
Alan Wheat	Missouri	Democratic	Oct 16, 1951	25 years, 81 days	Jan 5, 1977 – Jan 1983	Later U.S. representative (1983–1995) and nominee for U.S. senator (1994).
Lauren Matsumoto	Hawaii	Republican	Aug 16, 1987	25 years, 82 days	Nov 6, 2012 – present	Later minority leader (2022–present).
Stephen Adams	Tennessee	Democratic	Oct 17, 1807	25 years, 83 days	Jan 8, 1833 – 1834	Later U.S. representative (1845–1847), Mississippi state representative (1850) and U.S. senator (1852–1857).
Jake Johnson	North Carolina	Republican	May 15, 1994	25 years, 83 days	Aug 6, 2019 – present
William H. Robertson	New York	Whig	Oct 10, 1823	25 years, 83 days	Jan 1, 1849 – Dec 31, 1850	Later state senator (1854–1855, 1872–1881, 1888–1891), U.S. representative (1867–1869) and state senate president pro tempore (1874–1881). Switched to the Republican Party in 1855.
Gene Green	Texas	Democratic	Oct 17, 1947	25 years, 84 days	Jan 9, 1973 – May 27, 1985	Later state senator (1985–1993) and U.S. representative (1993–2019).
Murray Hearn	New York	Democratic	Oct 6, 1898	25 years, 87 days	Jan 1, 1924 – Dec 31, 1929
William P. McLean	Texas	Democratic	Aug 9, 1836	25 years, 87 days	Nov 4, 1861 – Jan 7, 1862, Feb 8, 1870 – Jan 14, 1873	Later U.S. representative (1873–1875).
Jonathan Healy	Massachusetts	Republican	Oct 10, 1945	25 years, 88 days	Jan 6, 1971 – Jan 6, 1993	Later state Commissioner of Food and Agriculture (1993–2003).
George P. McLean	Connecticut	Republican	Oct 7, 1857	25 years, 88 days	Jan 3, 1883 – Jan 7, 1885	Later state senator (1886–1888), governor (1901–1903) and U.S. senator (1911–1929).
Josiah Magnuson	South Carolina	Republican	Aug 17, 1991	25 years, 89 days	Nov 14, 2016 – present
Timothy Joseph Cooney	Massachusetts	Democratic	Sep 30, 1909	25 years, 94 days	Jan 2, 1935 – Jan 6, 1937
William T. Minor	Connecticut	Independent	Oct 3, 1815	25 years, 95 days	Jan 6, 1841 – 1848	Later state senator (1854–1855) and governor (1855–1857).
Colton Moore	Georgia	Republican	Oct 10, 1993	25 years, 96 days	Jan 14, 2019 – Jan 14, 2021	Later state senator (2023–present).
Tom Schieffer	Texas	Democratic	Oct 4, 1947	25 years, 97 days	Jan 9, 1973 – Jan 9, 1979
Dennis J. Kearney	Massachusetts	Democratic	Sep 25, 1949	25 years, 98 days	Jan 1, 1975 – Jan 3, 1979	Later sheriff of Suffolk County (1979–1987) and candidate for mayor of Boston (1983).
Emery L. Frazier	Kentucky	Democratic	Sep 24, 1896	25 years, 99 days	Jan 1, 1922 – Jan 1, 1924
Lawrence M. Henry	Colorado	Democratic	Oct 1, 1915	25 years, 99 days	Jan 8, 1941 – May 15, 1942, Jan 8, 1947 – Jan 12, 1949	^[287] Later state senator (1949–1953).
Elwood Bruner	California	Republican	Sep 27, 1854	25 years, 100 days	Jan 5, 1880 – Jan 3, 1881, Jan 5, 1891 – Jan 2, 1893	Later Alaska territorial senator (1913–1915).
James Walter Elder	Louisiana	Democratic	Oct 5, 1882	25 years, 100 days	Jan 13, 1908 – Jan 8, 1912	Later U.S. representative (1913–1915).
Timothy Joseph Murphy	Massachusetts	Democratic	Sep 23, 1909	25 years, 101 days	Jan 2, 1935 – Jan 4, 1939
Andrew Natsios	Massachusetts	Republican	Sep 22, 1949	25 years, 101 days	Jan 1, 1975 – Jan 6, 1987	Later chair of the Massachusetts Republican Party (1980–1987), state secretary of administration and finance (1999–2000) and administrator of USAID (2001–2006).
Scott Fitzpatrick	Missouri	Republican	Sep 28, 1987	25 years, 103 days	Jan 9, 2013 – Jan 14, 2019	Later state treasurer (2019–2023) and state auditor (2023–present).
Vanessa Guerra	Michigan	Democratic	Sep 14, 1989	25 years, 109 days	Jan 1, 2015 – Jan 1, 2021
Byron G. Allen	Iowa	Republican	Sep 13, 1901	25 years, 110 days	Jan 1, 1927 – 1932	At the time the youngest-ever Iowa state legislator.^[288] Son of state senator Joseph H. Allen. Later Democratic–Farmer–Labor Party nominee for governor of Minnesota (1944) and commissioner of the Minnesota Department of Agriculture (1955–1961).
Rodney J. Satter	Wisconsin	Republican	Sep 15, 1925	25 years, 110 days	Jan 3, 1951 – Jan 5, 1953	^[289]
Preston Brooks	South Carolina	Democratic	Aug 5, 1819	25 years, 112 days	Nov 25, 1844 – Nov 23, 1846	Later U.S. representative (1853–1856, 1856–1857).
A. I. Adams	Washington	Republican	Sep 21, 1865	25 years, 113 days	Jan 12, 1891 – Jan 9, 1893	^[290]
Kika de la Garza	Texas	Democratic	Sep 22, 1927	25 years, 113 days	Jan 13, 1953 – Jan 1965	Later U.S. representative (1965–1997).
Travis Tranel	Wisconsin	Republican	Sep 12, 1985	25 years, 113 days	Jan 3, 2011 – present	^[291]
Benjamin Downing	Massachusetts	Democratic	Sep 11, 1981	25 years, 114 days	Jan 3, 2007 – Jan 4, 2017	Later candidate for governor (2022).
Stephen R. Reed	Pennsylvania	Democratic	Aug 9, 1949	25 years, 114 days	Dec 1, 1974 – Dec 1, 1980	Later mayor of Harrisburg (1982–2010).
Ajay Pittman	Oklahoma	Democratic	Sep 10, 1993	25 years, 115 days	Jan 3, 2019 – present	Daughter of Anastasia Pittman.
Eleazer Wakeley	Wisconsin	Democratic	Jun 25, 1822	25 years, 115 days	Oct 18, 1847 – May 29, 1848, Jan 7, 1867 – Jan 6, 1868	Son of Solmous Wakeley. Later state senator (1852–1856) and candidate for state attorney general (1863).
Peter J. Fitzgerald	Massachusetts	Democratic	Sep 13, 1899	25 years, 116 days	Jan 7, 1925 – Jan 4, 1933
Tom Craddick	Texas	Republican	Sep 19, 1943	25 years, 117 days	Jan 14, 1969 – present	Longest-serving state legislator in Texas history.^[292] Later speaker of the state House (2003–2009).
Samuel G. Fulton	Minnesota	Republican	Sep 7, 1851	25 years, 117 days	Jan 2, 1877 – Jan 6, 1879
Chuck Grassley	Iowa	Republican	Sep 17, 1933	25 years, 117 days	Jan 12, 1959 – Jan 3, 1975	Later U.S. representative (1975–1981), U.S. senator (1981–present), president pro tempore of the U.S. Senate (2019–2021) and president pro tempore emeritus of the U.S. Senate (2021–present).
William Francis Murray	Massachusetts	Democratic	Sep 7, 1881	25 years, 117 days	Jan 2, 1907 – Jan 6, 1909	Later U.S. representative (1911–1914).
Andrew P. Peterson	Minnesota	[?]	Sep 7, 1851	25 years, 117 days	Jan 2, 1877 – Jan 7, 1878
Christopher Rants	Iowa	Republican	Sep 16, 1967	25 years, 117 days	Jan 11, 1993 – Jan 9, 2011	Later speaker pro tempore (1999), majority leader (1999–2003), speaker of the state House (2003–2007) and candidate for governor (2010).
Timothy F. Callahan	Massachusetts	Democratic	Sep 5, 1881	25 years, 119 days	Jan 2, 1907 – Jan 4, 1911
Anthony Joseph Rich	Connecticut	Republican	Sep 12, 1903	25 years, 119 days	Jan 9, 1929 – Jan 9, 1935	^[293] Later state senator (1937–1941).
D. Welton Thompson	Connecticut	Democratic	Sep 7, 1885	25 years, 119 days	Jan 4, 1911 – Jan 8, 1913	^[294]
James T. Farley	California	Whig	Aug 6, 1829	25 years, 120 days	Dec 4, 1854 – Dec 3, 1860	Switched to the Know Nothing Party in 1855, and to the Democratic Party in 1860. Later speaker of the state House (1856), state senator (1860–1878), state senate president pro tempore (1872–1874) and U.S. senator (1879–1885).
		Know Nothing
		Democratic
Joseph R. Knowland	California	Republican	Aug 5, 1873	25 years, 122 days	Dec 5, 1898 – Dec 1, 1902	Later state senator (1902–1904), U.S. representative (1904–1915) and nominee for U.S. senator (1914).
Frank Ellsworth Doremus	Michigan	Democratic	Aug 31, 1865	25 years, 123 days	Jan 1, 1891 – Jan 1, 1893	Later U.S. representative (1911–1921) and mayor of Detroit (1923–1924).
Juan Carlos Porras	Florida	Republican	Jul 8, 1997	25 years, 123 days	Nov 8, 2022 – present
Daniel Valianti	Massachusetts	Democratic	Sep 1, 1965	25 years, 123 days	Jan 2, 1991 – Jan 1, 1997
Clement Vallandigham	Ohio	Democratic	Jul 29, 1820	25 years, 125 days	Dec 1, 1845 – Dec 5, 1847	Later U.S. representative (1858–1863) and nominee for governor (1863).
Albion Parris	Massachusetts	Democratic-Republican	Jan 19, 1788	25 years, 127 days	May 26, 1813 – May 25, 1814	Later U.S. representative (1815–1818), governor of Maine (1822–1827) and U.S. senator (1827–1828).
John Joseph Craven	Massachusetts	Democratic	Aug 29, 1907	25 years, 128 days	Jan 4, 1933 – Jan 2, 1935, Jan 6, 1937 – Jan 1, 1941
Terrance Joseph Lomax Jr.	Massachusetts	Democratic	Aug 29, 1907	25 years, 128 days	Jan 4, 1933 – Jan 6, 1943
Philip Ludwell III	Virginia	Independent	Dec 28, 1716	25 years, 129 days	May 6, 1742 – Feb 27, 1752	Son of Philip Ludwell Jr.
Joshua Evans	Tennessee	Republican	Jun 27, 1983	25 years, 130 days	Nov 4, 2008 – Nov 4, 2014
Fue Lee	Minnesota	Democratic	Aug 26, 1991	25 years, 130 days	Jan 3, 2017 – present
Bushrod Washington	Virginia	Independent	Jun 5, 1762	25 years, 132 days	Oct 15, 1787 – Jun 23, 1788	Son of John Augustine Washington and nephew of president George Washington. Later associate justice of the Supreme Court (1798–1829).
John G. Hagberg	Massachusetts	Republican	Aug 24, 1873	25 years, 133 days	Jan 4, 1899 – Jan 7, 1903
Christopher Hodgkins	Massachusetts	Democratic	Aug 24, 1957	25 years, 134 days	Jan 5, 1983 – Jan 1, 2003
David B. Shaw	Massachusetts	Democratic	Aug 20, 1870	25 years, 134 days	Jan 1, 1896 – Jan 5, 1898, Jan 2, 1901 – Jan 1, 1902, Jan 5, 1910 – Jan 4, 1911
Alton Farrel	Connecticut	Republican	Aug 22, 1879	25 years, 135 days	Jan 4, 1905 – Jan 9, 1907	^[295] Later mayor of Ansonia (1905–1906) and state senator (1907–1909).
Theodore C. Speliotis	Massachusetts	Democratic	Aug 20, 1953	25 years, 136 days	Jan 3, 1979 – Jan 7, 1987, Jan 1, 1997 – Jan 6, 2021
Richard J. Steffens	Wisconsin	Republican	Aug 23, 1921	25 years, 136 days	Jan 6, 1947 – Jan 3, 1949	^[296]
John F. Harrington	New Hampshire	Democratic	Aug 18, 1875	25 years, 137 days	Jan 2, 1901 –[?]	^[297]
Henry Parker McLaren	Massachusetts	Republican	Aug 17, 1909	25 years, 138 days	Jan 2, 1935 – Jan 6, 1937
Bob Schaffer	Colorado	Republican	Jul 24, 1962	25 years, 138 days	Dec 9, 1987 – Jan 3, 1997	Later U.S. representative (1997–2003).
Rick Berg	North Dakota	Republican	Aug 16, 1959	25 years, 140 days	Dec 1, 1984 – Dec 1, 2010	Later speaker of the state House (1993–1995), majority leader (2003–2009), U.S. representative (2011–2013), nominee for U.S. senator (2012) and chair of the state Republican Party (2018–2021).
Michael P. Geary	Massachusetts	Democratic	Aug 16, 1868	25 years, 140 days	Jan 3, 1894 – Jan 1, 1896
Rod Johnson	Nebraska	Republican	Aug 18, 1957	25 years, 140 days	Jan 5, 1983 – 1992
George J. Rabouin	Massachusetts	Republican	Aug 19, 1889	25 years, 140 days	Jan 6, 1915 – Jan 5, 1916
Matt Gabler	Pennsylvania	Republican	Jul 13, 1983	25 years, 141 days	Dec 1, 2008 – Dec 1, 2020
Thomas Hall	Ohio	Republican	Aug 16, 1995	25 years, 141 days	Jan 4, 2021 – present
Louis M. Heminway	Connecticut	Democratic	Aug 21, 1875	25 years, 141 days	Jan 9, 1901 – Jan 7, 1903	^[298]
John D. Hershey	Pennsylvania	Republican	Jul 13, 1993	25 years, 141 days	Dec 1, 2018 – Nov 30, 2022	Grandson of Arthur D. Hershey.
Enoch Louis Lowe	Maryland	Democratic	Aug 10, 1820	25 years, 141 days	Dec 29, 1845 – Dec 28, 1846	Later governor (1851–1854).
Mary Peltola	Alaska	Democratic	Aug 31, 1973	25 years, 141 days	Jan 19, 1999 – Jan 20, 2009	Later U.S. representative (2022–present).
Kenneth W. Angstman	Minnesota	Independent	Aug 14, 1913	25 years, 142 days	Jan 3, 1939 – Jan 4, 1943	^[299]
Michael J. Reidy	Massachusetts	Democratic	Aug 8, 1870	25 years, 146 days	Jan 1, 1896 – Jan 5, 1898, Jan 6, 1909 – Jan 5, 1910, Jan 4, 1911 – Jan 1, 1913, Jan 1, 1919 – Jan 7, 1920
Alex Lee	California	Democratic	Jul 11, 1995	25 years, 149 days	Dec 7, 2020 – present
Michael W. Collins	Massachusetts	Democratic	Aug 5, 1869	25 years, 150 days	Jan 2, 1895 – Jan 1, 1896
Adam Brown	Illinois	Republican	Aug 14, 1985	25 years, 151 days	Jan 12, 2011 – Jan 11, 2017
Jason Smith	Missouri	Republican	Jun 16, 1980	25 years, 151 days	Nov 14, 2005 – Jun 4, 2013	Later U.S. representative (2013–present) and youngest-ever Ways and Means Committee chairman.^[300]
Chris Murphy	Connecticut	Democratic	Aug 3, 1973	25 years, 153 days	Jan 3, 1999 – Jan 3, 2003	Later state senator (2003–2007), U.S. representative (2007–2013) and U.S. senator (2013–present).
John Schwamm	Alaska	Democratic	Aug 25, 1943	25 years, 155 days	Jan 27, 1969 – Jan 11, 1971	^[301]
Robert P. Kordus	Wisconsin	Democratic	Aug 1, 1939	25 years, 156 days	Jan 4, 1965 – 1968	^[302]
Katrina Shankland	Wisconsin	Democratic	Aug 4, 1987	25 years, 156 days	Jan 7, 2013 – present
Eraine L. Genest	Connecticut	Democratic	Aug 3, 1933	25 years, 157 days	Jan 7, 1959 – Jan 4, 1961	^[303]
Brereton C. Jones	West Virginia	Republican	Jun 27, 1939	25 years, 157 days	Dec 1, 1964 – Dec 1, 1968	Son of state senator E. Bartow Jones II. Became the youngest-ever West Virginia delegate,^[304] and the youngest-ever West Virginia minority leader.^[305] Switched to the Democratic Party in 1975. Later lieutenant governor of Kentucky (1987–1991) and governor of Kentucky (1991–1995).
William L. Nelson	Missouri	Democratic	Aug 4, 1875	25 years, 158 days	Jan 9, 1901 – Jan 7, 1903, Jan 4, 1905 – Jan 9, 1907	Later U.S. representative (1919–1921, 1925–1933, 1925–1933).
Mark E. Lawton	Massachusetts	Democratic	Jul 26, 1949	25 years, 159 days	Jan 1, 1975 – Jan 2, 1985
Donald T. Bliss	Massachusetts	Republican	Jul 26, 1937	25 years, 160 days	Jan 2, 1963 – Jan 5, 1977
Louis A. Wiltz	Louisiana	Democratic	Jan 21, 1843	25 years, 160 days	Jun 29, 1868 – Jan 4, 1869	Later mayor of New Orleans (1872–1874), lieutenant governor (1877–1880) and governor (1880–1881).
Josiah T. Walls	Florida	Republican	Dec 30, 1842	25 years, 161 days	Jun 8, 1868 – Jan 1, 1869	Later state senator (1869–1871, 1877–1881) and U.S. representative (1871–1873, 1873–1876).
Garrett Mason	Maine	Republican	Jun 19, 1985	25 years, 165 days	Dec 1, 2010 – Dec 5, 2018	Son of Gina and Rick Mason. Later senate majority leader (2014–2018) and candidate for governor (2018).
Denis J. Sullivan	Massachusetts	Democratic	Jul 24, 1889	25 years, 166 days	Jan 6, 1915 – Jan 2, 1918, Jan 2, 1929 – Jan 7, 1931
Lindon Bates Jr.	New York	Republican	Jul 17, 1883	25 years, 168 days	Jan 1, 1909 – Dec 31, 1910	Later co-founder the state Progressive Party (1912).^[306]
Percy Lucius Prentis	Iowa	Republican	Jul 28, 1870	25 years, 169 days	Jan 13, 1896 – Jan 12, 1902	^[307]
Daniel D. Rourke	Massachusetts	Democratic	Jul 16, 1869	25 years, 170 days	Jan 2, 1895 – Jan 5, 1898	Later state senator (1898–1899).
Michael G. Glover	Kansas	Democratic	Jul 21, 1947	25 years, 171 days	Jan 8, 1973 – 1980	^[23]
Jo Byrns	Tennessee	Democratic	Jul 20, 1869	25 years, 173 days	Jan 9, 1895 – 1901	Later state senator (1901–1903), U.S. representative (1909–1936) and speaker of the U.S. House (1935–1936).
James H. Berry	Arkansas	Democratic	May 15, 1841	25 years, 174 days	Nov 6, 1866 – Nov 10, 1874	Later speaker of the state House (1874), governor (1883–1885) and U.S. senator (1885–1907).
Robert L. Genin	Mississippi	Democratic	Jul 12, 1886	25 years, 174 days	Jan 2, 1912 – Jan 6, 1920, Jan 5, 1926 – Jan 3, 1928	^[308]
Kyle Tasker	New Hampshire	Republican	Jun 6, 1985	25 years, 178 days	Dec 1, 2010 – Mar 9, 2016
Michael Ferguson	Connecticut	Republican	Jul 5, 1991	25 years, 181 days	Jan 2, 2017 – Jan 7, 2019
Jeff Coleman	Pennsylvania	Republican	Jul 4, 1975	25 years, 182 days	Jan 2, 2001 – Nov 30, 2004
Roger Raymond Fischer	Pennsylvania	Republican	Jun 1, 1941	25 years, 183 days	Dec 1, 1966 – Dec 1, 1988
Albert E. Lynch	Massachusetts	Democratic	Jul 4, 1867	25 years, 184 days	Jan 4, 1893 – Jan 3, 1894
Leon Young	Wisconsin	Democratic	Jul 4, 1967	25 years, 184 days	Jan 4, 1993 – Jan 7, 2019	^[309]
Danny Patrick	Arkansas	Republican	Jul 8, 1941	25 years, 185 days	Jan 9, 1967 – Jan 11, 1971	^[310]
Travis Bruce Moursund	Texas	Democratic	Jul 9, 1901	25 years, 186 days	Jan 11, 1927 – Jan 8, 1929	Son of Anton N. Moursund.
Margaret P. Varda	Wisconsin	Progressive	Jun 30, 1917	25 years, 188 days	Jan 4, 1943 – Jan 3, 1945	Wife of John P. Varda. Later switched to the Republican Party.
Daniel F. Pokaski	Massachusetts	Democratic	Jun 26, 1949	25 years, 189 days	Jan 1, 1975 – Jan 2, 1983
Ernest A. Dore Jr.	Washington	Democratic	Jul 4, 1911	25 years, 191 days	Jan 11, 1937 – Jan 8, 1945	^[199]
Carly Melin	Minnesota	Democratic	Aug 13, 1985	25 years, 193 days	Feb 22, 2011 – Jan 2, 2017
Barbara Hernandez	Illinois	Democratic	Aug 23, 1993	25 years, 196 days	Mar 7, 2019 – present
James L. Vallely	Massachusetts	Democratic	Jun 19, 1913	25 years, 199 days	Jan 4, 1939 – Jan 6, 1943
Joseph H. Elliott	Connecticut	Republican	Jun 21, 1877	25 years, 200 days	Jan 7, 1903 – Jan 4, 1905	^[311]
James H. Doyle	Massachusetts	Democratic	Jun 17, 1867	25 years, 201 days	Jan 4, 1893 – Jan 2, 1895	Later state senator (1909–1912).
Mark Falzone	Massachusetts	Democratic	Jun 14, 1975	25 years, 203 days	Jan 3, 2001 – Jan 5, 2011
William O. Manwaring	Connecticut	Republican	Jun 20, 1931	25 years, 203 days	Jan 9, 1957 – Jan 6, 1965	^[312]
Mark D. Siljander	Michigan	Republican	Jun 11, 1951	25 years, 204 days	Jan 1, 1977 – Jan 1, 1981
James Madison	Virginia	Independent	Mar 16, 1751	25 years, 205 days	Oct 7, 1776 – Dec 21, 1776	President of the United States (1809–1817)
Jim Sensenbrenner	Wisconsin	Republican	Jun 14, 1943	25 years, 206 days	Jan 6, 1969 – Apr 2, 1975	Later state senator (1975–1979) and U.S. representative (1979–2021).
Marie E. Howe	Massachusetts	Democratic	Jun 13, 1939	25 years, 207 days	Jan 6, 1965 – Jan 4, 1989
Benedict E. Lyons	Connecticut	Republican	Jun 13, 1883	25 years, 207 days	Jan 6, 1909 – Jan 4, 1911	^[313]
Emanuel G. Serra	Massachusetts	Democratic	Jun 12, 1945	25 years, 208 days	Jan 6, 1971 – Jan 6, 1999
Rush Holt Sr.	West Virginia	Democratic	Jun 19, 1905	25 years, 209 days	Jan 14, 1931 – Jan 1935	Later U.S. senator (1935–1941) and Republican Party nominee for governor (1952).
Augustus Gardner Means	Massachusetts	Republican	Jun 8, 1925	25 years, 209 days	Jan 3, 1951 – Jan 5, 1955	Later member of the Governor's Council (1955–1961).
Thomas Washington Masterson	Texas	Democratic	Jun 13, 1879	25 years, 211 days	Jan 10, 1905 – Oct 12, 1909	^[314]
Howard Metzenbaum	Ohio	Democratic	Jun 4, 1917	25 years, 211 days	Jan 1, 1943 – Jan 1, 1947	Later state senator (1947–1951) and U.S. senator (1974, 1976–1995).
Henry Dickinson Green	Pennsylvania	Democratic	May 3, 1857	25 years, 212 days	Dec 1, 1882 – Dec 1, 1886	Later state senator (1888–1896) and U.S. representative (1899–1903).
John Joseph Kerrigan Jr.	Massachusetts	Democratic	Jun 8, 1911	25 years, 212 days	Jan 6, 1937 – Jan 1, 1941
Adam Ravenstahl	Pennsylvania	Democratic	Nov 9, 1984	25 years, 212 days	Jun 9, 2010 – Dec 1, 2020	Grandson of Robert Ravenstahl and younger brother of Luke Ravenstahl.
Adam Smith	Washington	Democratic	Jun 15, 1965	25 years, 213 days	Jan 14, 1991 – Jan 3, 1997	Later U.S. representative (1997–present).
Stephen Webber	Missouri	Democratic	Jun 8, 1983	25 years, 213 days	Jan 7, 2009 – Jan 9, 2017	Later chair of the state Democratic Party (2016–2018).
Phelps Anderson	New Mexico	Republican	May 31, 1951	25 years, 215 days	Jan 1, 1977 – Jan 1, 1981, Jan 1, 2019 – Jan 1, 2023	Left the Republican Party in February 2021.
Phelps Anderson	New Mexico	Independent	May 31, 1951	25 years, 215 days	Jan 1, 1977 – Jan 1, 1981, Jan 1, 2019 – Jan 1, 2023	Left the Republican Party in February 2021.
Peter Deutsch	Florida	Democratic	Apr 1, 1957	25 years, 215 days	Nov 2, 1982 – Nov 3, 1992	Later U.S. representative (1993–2005) and candidate for U.S. senator (2004).
Ron Hood	Ohio	Republican	Jun 2, 1969	25 years, 215 days	Jan 3, 1995 – Dec 31, 2000, Jan 3, 2005 – Dec 31, 2006, Jan 7, 2013 – Dec 31, 2020	Later candidate for governor (2022).
Peter Francis Tague	Massachusetts	Democratic	Jun 4, 1871	25 years, 216 days	Jan 6, 1897 – Jan 5, 1898, Jan 1, 1913 – Jan 7, 1914	Priorly member of the Boston Common Council (1894–1896). Later state senator (1899–1900) and U.S. representative (1915–1919, 1919–1925).
William H. Hall	Connecticut	Republican	May 31, 1867	25 years, 218 days	Jan 4, 1893 – Jan 4, 1899, Jan 4, 1905 – Jan 9, 1907, Jan 6, 1909 – Jan 8, 1913	Later state senator (1899–1901, 1917–1919, 1921–1922) and senate president pro tempore (1921–1922).
Willie Hensley	Alaska	Democratic	Jun 17, 1941	25 years, 220 days	Jan 23, 1967 – Jan 20, 1975, Jan 20, 1987 – Jan 9, 1989	^[315]
Gouverneur Morris	New York	Independent	Jan 30, 1752	25 years, 222 days	Sep 9, 1777 – Jun 30, 1778	Founding Father of the United States and a signatory to the Articles of Confederation and the United States Constitution
David Ober	Indiana	Republican	Mar 30, 1987	25 years, 222 days	Nov 7, 2012 – Apr 2, 2018
Thomas Fitzgerald	Indiana	[?]	Apr 10, 1796	25 years, 223 days	Nov 19, 1821 – Dec 2, 1822	Later Michigan state representative (1839) and U.S. senator (1848–1849).
Robert M. T. Hunter	Virginia	Whig	Apr 21, 1809	25 years, 224 days	Dec 1, 1834 – Mar 4, 1837	Later U.S. representative (1837–1843, 1845–1847), speaker of the U.S. House (1839–1841), U.S. senator (1847–1861), Confederate States Secretary of State (1861–1862), Confederate States senator (1862–1865) and president pro tempore of the Confederate States Senate (1862–1865).
Nicholas A. Spano	New York	Republican	May 21, 1953	25 years, 225 days	Jan 1, 1979 – Dec 31, 1986	Later state senator (1987–2006).
Kevin Windham Jr.	Missouri	Democratic	May 29, 1993	25 years, 225 days	Jan 9, 2019 – present
Howard F. Furness	Massachusetts	Republican	May 24, 1889	25 years, 227 days	Jan 6, 1915 – Jan 5, 1916, Jan 3, 1917 – Jan 7, 1920
Ralph V. Woolsey	Minnesota	Independent	May 26, 1909	25 years, 227 days	Jan 8, 1935 – Jan 2, 1939	At the time the youngest-ever Minnesota state senator.^[316]
Maurice J. Tobin	Massachusetts	Democratic	May 22, 1901	25 years, 228 days	Jan 5, 1927 – Jan 2, 1929	Later mayor of Boston (1938–1945), governor (1945–1947) and U.S. secretary of labor (1948–1953).
Samuel J. Madden	Massachusetts	Democratic	May 17, 1882	25 years, 229 days	Jan 1, 1908 – Jan 6, 1909
Mike Parker	Washington	Democratic	May 23, 1947	25 years, 230 days	Jan 8, 1973 – Jan 10, 1977	^[317]
William P. Higgins	Massachusetts	Democratic	May 16, 1881	25 years, 231 days	Jan 2, 1907 – Jan 6, 1909
Kate Knuth	Minnesota	Democratic	May 15, 1981	25 years, 233 days	Jan 3, 2007 – Jan 7, 2013	Daughter of state representative Daniel Knuth. Later candidate for mayor of Minneapolis (2021).
Kip Capley	Tennessee	Republican	Mar 18, 1997	25 years, 235 days	Nov 8, 2022 – present
William E. Mahoney	Massachusetts	Democratic	May 15, 1872	25 years, 235 days	Jan 5, 1898 – Jan 4, 1899, Jan 3, 1900 – Jan 2, 1901
Daniel C. Roper	South Carolina	Democratic	Apr 1, 1867	25 years, 235 days	Nov 22, 1892 – Nov 27, 1894	Later U.S. secretary of commerce (1933–1938).
Howard W. Alcorn	Connecticut	Republican	May 14, 1901	25 years, 236 days	Jan 5, 1927 – Jan 4, 1933	^[318] Later state senator (1933–1935).
Noah Sanford	Mississippi	Republican	May 14, 1990	25 years, 236 days	Jan 5, 2016 – present
Harold Ford Sr.	Tennessee	Democratic	May 20, 1945	25 years, 237 days	Jan 12, 1971 – Jan, 1975	Later U.S. representative (1975–1997).
Al W. Wieser Jr.	Minnesota	Democratic	May 15, 1949	25 years, 237 days	Jan 7, 1975 – Jan 3, 1983	Switched to the Republican Party in August 1977.
Al W. Wieser Jr.	Minnesota	Republican	May 15, 1949	25 years, 237 days	Jan 7, 1975 – Jan 3, 1983	Switched to the Republican Party in August 1977.
Ambrose Barnum Blake	South Dakota	Republican	May 20, 1887	25 years, 239 days	Jan 14, 1913 – Jan 14, 1919	^[319]
John J. Flanagan	New York	Republican	May 7, 1961	25 years, 239 days	Jan 1, 1987 – Dec 31, 2002	Later state senator (2003–2020), senate majority leader (2015–2019) and senate minority leader (2019–2020).
Scott Walker	Wisconsin	Republican	Nov 2, 1967	25 years, 240 days	Jun 30, 1993 – Apr 30, 2002	Later Milwaukee County executive (2002–2010), governor (2011–2019) and candidate for president of the United States (2016).
Robert Charles Winthrop	Massachusetts	Whig	May 12, 1809	25 years, 240 days	Jan 7, 1835 – Jan 1, 1840	Son of Thomas L. Winthrop. Later speaker of the state House (1838–1840), U.S. representative (1840–1842, 1842–1850), speaker of the U.S. House (1847–1849), U.S. senator (1850–1851) and nominee for governor (1851).
LeRoy Collins	Florida	Democratic	Mar 10, 1909	25 years, 241 days	Nov 6, 1934 – Nov 5, 1940	Later state senator (1940–1943, 1946–1954) and governor (1955–1961).
Paul Sliter	Montana	Republican	May 5, 1969	25 years, 242 days	Jan 2, 1995 – Aug 15, 2001	Later majority leader (2001).
Marcelo Llorente	Florida	Republican	Mar 7, 1977	25 years, 243 days	Nov 5, 2002 – Nov 2, 2010	Later candidate for mayor of Miami-Dade County (2011).
Patrick Guerriero	Massachusetts	Republican	Mar 3, 1968	25 years, 244 days	Nov 2, 1993 – Jan 3, 1998	Later mayor of Melrose (1998–2001) and candidate for lieutenant governor (2002) as the running mate of Jane Swift.
Zaynab Mohamed	Minnesota	Democratic	May 4, 1997	25 years, 244 days	Jan 3, 2023 – present
Claude Benton Hudspeth	Texas	Democratic	May 12, 1877	25 years, 246 days	Jan 13, 1903 – Jan 8, 1907	Later state senator (1907–1919) and U.S. representative (1919–1931).
Pat Neal	Florida	Democratic	Mar 4, 1949	25 years, 246 days	Nov 5, 1974 – Nov 7, 1978	Later state senator (1978–1986). Switched to the Republican Party on November 11, 1986.^[320]
Thomas Drummond	Iowa	Republican	May 9, 1832	25 years, 247 days	Jan 11, 1858 – Jan 8, 1860	Later state senator (1860–1861).
John L. Gibbs	Minnesota	Republican	May 3, 1838	25 years, 247 days	Jan 5, 1864 – Jan 1, 1866, Jan 4, 1876 – Jan 7, 1878, Jan 6, 1885 – Jan 3, 1887, Jan 8, 1895 – Jan 4, 1897	Later speaker of the state House (1877–1878, 1885–1887), candidate for governor (1886) and lieutenant governor (1897–1899).
T. John Lesinski	Michigan	Democratic	Apr 28, 1925	25 years, 248 days	Jan 1, 1951 – Jan 1, 1961	Later lieutenant governor (1961–1965).
Charles Frederick Stevens	Texas	Democratic	May 7, 1859	25 years, 251 days	Jan 13, 1885 – Jan 11, 1887	^[321]
Matt Lesser	Connecticut	Democratic	Apr 29, 1983	25 years, 253 days	Jan 7, 2009 – Jan 9, 2019	Later state senator (2019–present).
Michael Davis	Missouri	Republican	Apr 27, 1995	25 years, 254 days	Jan 6, 2021 – present
Joseph E. Donovan	Massachusetts	Democratic	Apr 21, 1882	25 years, 255 days	Jan 1, 1908 – Jan 5, 1910
Joe Moakley	Massachusetts	Democratic	Apr 27, 1927	25 years, 255 days	Jan 7, 1953 – Jan 1, 1963	Later state senator (1965–1971) and U.S. representative (1973–2001).
Jay Trumbull	Florida	Republican	Feb 21, 1989	25 years, 256 days	Nov 4, 2014 – Nov 8, 2022	Later state senator (2022–present).
Brian Cresta	Massachusetts	Republican	Apr 22, 1969	25 years, 257 days	Jan 4, 1995 – Jan 2, 2001	Later chair of the state Republican Party (1998–2001).
Chris Hall	Massachusetts	Democratic	Apr 17, 1985	25 years, 259 days	Jan 1, 2011 – Jan 1, 2023
Willie Logan	Florida	Democratic	Feb 16, 1957	25 years, 259 days	Nov 2, 1982 – Nov 7, 2000	Priorly mayor of Opa-locka (1980–1982). Later independent candidate for U.S. senator (2000).
David Boren	Oklahoma	Democratic	Apr 21, 1941	25 years, 261 days	Jan 7, 1967 – Nov 1974	Later governor (1975–1979) and U.S. senator (1979–1994).
David J. Lepak	Wisconsin	Republican	Apr 17, 1959	25 years, 261 days	Jan 3, 1985 – Jan 3, 1991	^[322]
Dolph Briscoe	Texas	Democratic	Apr 23, 1923	25 years, 263 days	Jan 11, 1949 – Jan 8, 1957	Later governor (1973–1979).
Leonard Hughes IV	Missouri	Democratic	Apr 15, 1979	25 years, 265 days	Jan 5, 2005 – 2013
Chester A. Krohn	Wisconsin	Progressive	Apr 16, 1915	25 years, 265 days	Jan 6, 1941 – Jan 4, 1943
James R. Nolen	Massachusetts	Democratic	Apr 17, 1933	25 years, 265 days	Jan 7, 1959 – Jan 3, 1979
Daniel Joseph Kane	Massachusetts	Democratic	Apr 14, 1872	25 years, 266 days	Jan 5, 1898 – Jan 3, 1900
Thomas F. Coogan	Massachusetts	Democratic	Apr 9, 1882	25 years, 267 days	Jan 1, 1908 – Jan 4, 1911
Joseph P. Bauserman	Kansas	Democratic	Apr 14, 1840	25 years, 270 days	Jan 9, 1866 – Jan 8, 1867	Later state senator (1875–1877).
Mattie Daughtry	Maine	Democratic	Mar 9, 1987	25 years, 271 days	Dec 5, 2012 – Dec 2, 2020	Later state senator (2020–present).
Earle Bradford Mayfield	Texas	Democratic	Apr 12, 1881	25 years, 271 days	Jan 8, 1907 – Sep 25, 1912	Later state senate president pro tempore (1911–1913), state railroad commissioner (1913–1923), U.S. senator (1923–1929) and candidate for governor (1930).
Alexander Cornell du Houx	Maine	Democratic	Mar 6, 1983	25 years, 272 days	Dec 3, 2008 – Dec 5, 2012
Christopher Lyddy	Connecticut	Democratic	Apr 8, 1983	25 years, 274 days	Jan 7, 2009 – Jan 9, 2013
James R. Kelley	Pennsylvania	Republican	Mar 1, 1839	25 years, 275 days	Dec 1, 1864 – Dec 1, 1866	Later speaker of the state House (1866).
Bernard McMackin	Massachusetts	Democratic	Apr 2, 1869	25 years, 275 days	Jan 2, 1895 – Jan 1, 1896
Edwin Myrwyn Rowlands	Wisconsin	Progressive	Apr 1, 1901	25 years, 277 days	Jan 3, 1927 – Jan 3, 1933	Later chair of the state Progressive Party and state senator (1935–1937).
Alma Hernandez	Arizona	Democratic	Apr 11, 1993	25 years, 278 days	Jan 14, 2019 – present	Youngest-ever female legislator in Arizona.^[270]
Rachel Roarx	Kentucky	Democratic	Mar 25, 1997	25 years, 282 days	Jan 1, 2023 – present	Youngest-ever female legislator in Kentucky.^[323]
Donald B. Miller	Washington	Democratic	Apr 2, 1911	25 years, 284 days	Jan 11, 1937 – Jan 13, 1941, Jan 11, 1943 – 1944	^[324]^[325] Later state senator (1949–1953).
Jeb Bardon	Indiana	Democratic	Jan 23, 1973	25 years, 285 days	Nov 4, 1998 – Nov 6, 2012
Burke Musgrove	Texas	Democratic	Mar 31, 1941	25 years, 285 days	Jan 10, 1967 – Jan 12, 1971
John J. Murphy	Massachusetts	Democratic	Mar 26, 1889	25 years, 286 days	Jan 6, 1915 – Jan 7, 1920
Charles J. Warner	Nebraska	Republican	Mar 29, 1875	25 years, 286 days	Jan 9, 1901 – Jan 9, 1907	Later state senator (1919–1937), speaker of the unicameral legislature (1937–1939) and lieutenant governor (1949–1955).
Daniel M. Cronin	Connecticut	Republican	Mar 23, 1879	25 years, 287 days	Jan 4, 1905 – Jan 9, 1907, Jan 6, 1909 – Jan 4, 1911, Jan 3, 1923 – Jan 7, 1925	^[326] Later state senator (1925–1927).
John F. Cordisco	Pennsylvania	Democratic	Feb 17, 1955	25 years, 288 days	Dec 1, 1980 – 1986
Denton G. Burdick	Oregon	Republican	Mar 25, 1891	25 years, 289 days	Jan 8, 1917 – Jan 12, 1931	Later speaker of the state House (1925–1927).
John Bunyan Adams	Kansas	Republican	Mar 25, 1873	25 years, 290 days	Jan 9, 1899 – Jan 9, 1905
Kurt Frank	Wisconsin	Democratic	Mar 20, 1945	25 years, 290 days	Jan 4, 1971 – Jan 3, 1983	^[327]
Arthur Ravenel Jr.	South Carolina	Democratic	Mar 29, 1927	25 years, 290 days	Jan 13, 1953 – Jan 13, 1959	Later state senator (1981–1987, 1997–2005) and U.S. representative (1987–1995). Switched to the Republican Party in 1960.
Katie Sieben	Minnesota	Democratic	Mar 23, 1977	25 years, 290 days	Jan 7, 2003 – Jan 2, 2007	Daughter of Mike Sieben. Later state senator (2007–2017).
Abraham Lincoln	Illinois	Whig	Feb 12, 1809	25 years, 292 days	Dec 1, 1834 – Dec 4, 1842	President of the United States (1861–1865)
Mark Fitzsimmons	Massachusetts	Democratic	Mar 15, 1951	25 years, 296 days	Jan 5, 1977 – Jan 3, 1979
James W. Hennigan Jr.	Massachusetts	Democratic	Mar 17, 1927	25 years, 296 days	Jan 7, 1953 – Jan 4, 1955	Later state senator (1955–1965).
Robert H. Perkins	Connecticut	Republican	Mar 16, 1871	25 years, 296 days	Jan 6, 1897 – Jan 4, 1899	^[328]
Christopher Tjornhom	Minnesota	Republican	Mar 18, 1959	25 years, 296 days	Jan 8, 1985 – Jan 7, 1991
David Spence Tobin	Massachusetts	Democratic	Mar 16, 1939	25 years, 296 days	Jan 6, 1965 – Jan 1, 1969
Jasmine Blackwater-Nygren	Arizona	Democratic	Apr 18, 1995	25 years, 297 days	Feb 9, 2021 – Jan 9, 2023	Later first lady of the Navajo Nation (2023–present).
Vincent Pedone	Massachusetts	Democratic	Mar 15, 1967	25 years, 297 days	Jan 6, 1993 – Jan 2, 2013
Mike Turner	Oklahoma	Republican	Mar 17, 1987	25 years, 297 days	Jan 8, 2013 – Jan 6, 2015
William L. Armstrong	Colorado	Republican	Mar 16, 1937	25 years, 299 days	Jan 9, 1963 – 1964	Later state senator (1965–1972), U.S. representative (1973–1979) and U.S. senator (1979–1991).
Andrew E. Johnson	Florida	Democratic	Jan 12, 1953	25 years, 299 days	Nov 7, 1978 – Nov 2, 1982
John Selden Roane	Arkansas	Democratic	Jan 8, 1817	25 years, 303 days	Nov 7, 1842 – Nov 2, 1846	Later speaker of the state House (1844–1846) and governor (1849–1852). Youngest-ever Arkansas governor.^[329]
Rasheen Aldridge Jr.	Missouri	Democratic	Mar 10, 1994	25 years, 304 days	Jan 8, 2020 – present
Edward L. Cundall	Connecticut	Republican	Mar 9, 1831	25 years, 304 days	Jan 7, 1857 – Jan 6, 1858, Jan 3, 1866 – Jan 9, 1867	^[330] Later state senator (1865–1866).
Ira Hobart Evans	Texas	Republican	Apr 11, 1844	25 years, 304 days	Feb 9, 1870 – Jan 14, 1873	Later speaker of the state House (1870–1871). Youngest-ever speaker of the Texas House.^[331]
Barry Finegold	Massachusetts	Democratic	Mar 3, 1971	25 years, 304 days	Jan 1, 1997 – Jan 5, 2011	Later state senator (2011–2015, 2019–present).
J. Kenneth Bradley	Connecticut	Republican	Mar 10, 1903	25 years, 305 days	Jan 9, 1929 – Jan 7, 1931, Jan 4, 1933 – Jan 9, 1935	^[332]
Robert Henry Goldsborough	Maryland	Federalist	Jan 4, 1779	25 years, 306 days	Nov 5, 1804 – Nov 4, 1806	Son of Robert Goldsborough. Later U.S. senator (1813–1819, 1835–1836).
Alberto Gutman	Florida	Republican	Jan 4, 1959	25 years, 307 days	Nov 6, 1984 – Nov 3, 1992	Later state senator (1992–1999).
James Menees Lindsay	Texas	[?]	Dec 31, 1835	25 years, 308 days	Nov 4, 1861 – Jan 14, 1862	^[333]
Lyndon Lowell Olson Jr.	Texas	Democratic	Mar 7, 1947	25 years, 308 days	Jan 9, 1973 – Jan 9, 1979	^[334]
Tony Payton	Pennsylvania	Democratic	Jan 27, 1981	25 years, 308 days	Dec 1, 2006 – Dec 1, 2012
William M. Erwin	Alaska	Democratic	Mar 23, 1933	25 years, 309 days	Jan 26, 1959 – Jan 28, 1963	^[335]
James Chesnut Jr.	South Carolina	Democratic	Jan 18, 1815	25 years, 310 days	Nov 23, 1840 – Dec 15, 1845, Nov 25, 1850 – Dec 16, 1851	Later state senator (1852–1858), senate president (1856–1858), U.S. senator (1858–1860) and member of the Provisional Confederate Congress (1861–1862).
Horatio Washington Bruce	Kentucky	Know Nothing	Feb 22, 1830	25 years, 312 days	Dec 31, 1855 – 1856	Later member of the Confederate States Congress (1862–1865).
Oscar Bergstrom	Texas	Democratic	Mar 6, 1859	25 years, 313 days	Jan 13, 1885 – Jan 11, 1887	^[336]
Jane Swift	Massachusetts	Republican	Feb 24, 1965	25 years, 313 days	Jan 3, 1991 – Jan 3, 1997	Later state secretary of consumer affairs (1997–1998), lieutenant governor (1999–2003), acting governor (2001–2003) and candidate for governor (2002).
James Allen	Alabama	Democratic	Dec 28, 1912	25 years, 316 days	Nov 9, 1938 – Nov 4, 1942	Later state senator (1946–1950), lieutenant governor (1951–1955, 1963–1967) and U.S. senator (1969–1978).
Alfred Santosuosso	Massachusetts	Democratic	Feb 22, 1889	25 years, 318 days	Jan 6, 1915 – Jan 5, 1916	Later candidate for mayor of Boston (1937).
Greg Davis	Mississippi	Republican	Feb 22, 1966	25 years, 319 days	Jan 7, 1992 – 1997	Later mayor of Southaven (1997–2013).
Mike Michaud	Maine	Democratic	Jan 18, 1955	25 years, 320 days	Dec 3, 1980 – Dec 7, 1994	Later state senator (1994–2003), U.S. representative (2003–2015) and nominee for governor (2014).
Chris Chyung	Indiana	Democratic	Dec 21, 1992	25 years, 321 days	Nov 7, 2018 – Nov 4, 2020
Thomas W. Hardwick	Georgia	Democratic	Dec 9, 1872	25 years, 321 days	Oct 26, 1898 – Oct 22, 1902	Later U.S. representative (1903–1914), U.S. senator (1914–1919) and governor (1921–1923).
Robert Francis Mooney	Massachusetts	Democratic	Feb 16, 1931	25 years, 321 days	Jan 2, 1957 – Jan 2, 1963
John DeFine	Connecticut	Democratic	Feb 14, 1925	25 years, 323 days	Jan 3, 1951 – Jan 7, 1953	^[337]
Billy Adams	Colorado	Democratic	Feb 15, 1861	25 years, 324 days	Jan 5, 1887 – Jan 2, 1889	Son of John Adams. Later state senator (1889–1927) and governor (1927–1933).
David K. E. Bruce	Maryland	Democratic	Feb 12, 1898	25 years, 324 days	Jan 2, 1924 – Jan 5, 1927	Later Virginia state representative (1940–1944) and U.S. under secretary of state (1952–1953).
William Alexander Richardson	Illinois	Democratic	Jan 16, 1811	25 years, 324 days	Dec 5, 1836 – Dec 3, 1838, Dec 2, 1844 – Dec 7, 1846	Later state senator (1838–1842), speaker of the state House (1844–1846), U.S. representative (1847–1856, 1861–1863), nominee for state governor (1856), governor of Nebraska Territory (1858) and U.S. senator (1863–1865).
John J. Douglass	Massachusetts	Democratic	Feb 9, 1873	25 years, 329 days	Jan 4, 1899 – Jan 2, 1901, Jan 3, 1906 – Jan 2, 1907, Jan 1, 1913 – Jan 7, 1914	Later U.S. representative (1925–1935).
Charles F. Mitchell	Connecticut	Democratic	Feb 8, 1885	25 years, 330 days	Jan 4, 1911 – Jan 8, 1913	^[338]
Sean Cahillane	Massachusetts	Democratic	Feb 9, 1951	25 years, 331 days	Jan 5, 1977 – Jan 3, 1979
Tyler Clancy	Utah	Republican	Feb 19, 1997	25 years, 332 days	Jan 17, 2023 – present
Edward Mott	Minnesota	Democratic	Feb 5, 1850	25 years, 333 days	Jan 4, 1876 – Jan 7, 1878	^[339]
Yasmin Neal	Georgia	Democratic	Feb 10, 1985	25 years, 334 days	Jan 10, 2011 – Jan 14, 2013, Jan 11, 2021 – present
J. Dick Snakenberg	Iowa	Democratic	Feb 14, 1915	25 years, 334 days	Jan 13, 1941 – Jan 10, 1943	^[340]
John Businger	Massachusetts	Democratic	Feb 5, 1945	25 years, 335 days	Jan 6, 1971 – Jan 6, 1999
Wendell R. Anderson	Minnesota	Democratic	Feb 1, 1933	25 years, 339 days	Jan 6, 1959 – Jan 8, 1963	Later state senator (1963–1971), governor (1971–1976) and U.S. senator (1976–1978).
Jon R. Guiles	Wisconsin	Republican	Jan 30, 1945	25 years, 339 days	Jan 4, 1971 – Jan 3, 1973	^[341]
Francis P. Guilfoile	Connecticut	Democratic	Feb 4, 1875	25 years, 339 days	Jan 9, 1901 – Jan 7, 1903	^[342]
Brandon Markosek	Pennsylvania	Democratic	Dec 25, 1992	25 years, 341 days	Dec 1, 2018 – present	Son of Joseph Markosek.
Robert Barnwell Rhett	South Carolina	Democratic	Dec 21, 1800	25 years, 341 days	Nov 27, 1826 – Nov 29, 1832	Later state attorney general (1832–1837), U.S. representative (1837–1849), U.S. senator (1850–1852) and deputy to the Provisional Confederate Congress (1861–1862).
Lee Metcalf	Montana	Democratic	Jan 28, 1911	25 years, 342 days	Jan 4, 1937 – 1937	Later U.S. representative (1953–1961), U.S. senator (1961–1978) and permanent acting senate president pro tempore (1963–1969).
Charles Taylor	North Carolina	Republican	Jan 23, 1941	25 years, 343 days	Jan 1, 1967 – Jan 1, 1973	Later state senator (1973–1975) and U.S. representative (1991–2007).
Daniel Zolnikov	Montana	Republican	Jan 29, 1987	25 years, 344 days	Jan 7, 2013 – Sep 30, 2020
Michael J. McNamee	Massachusetts	Democratic	Jan 26, 1889	25 years, 345 days	Jan 6, 1915 – Jan 1, 1919
Joseph F. Hickey	Massachusetts	Democratic	Jan 20, 1875	25 years, 347 days	Jan 2, 1901 – Jan 7, 1903
Edward Lawrence Logan	Massachusetts	Democratic	Jan 20, 1875	25 years, 347 days	Jan 2, 1901 – Jan 7, 1903	Later state senator (1906–1907).
Louis E. Flye	Massachusetts	Republican	Jan 18, 1881	25 years, 349 days	Jan 2, 1907 – Jan 6, 1909
Joseph E. Tregoning	Wisconsin	Republican	Apr 26, 1941	25 years, 349 days	Apr 10, 1967 – May 28, 1990	^[343]
William I. McLoughlin	Massachusetts	Democratic	Jan 16, 1872	25 years, 354 days	Jan 5, 1898 – Jan 2, 1901
Jerris Leonard	Wisconsin	Republican	Jan 17, 1931	25 years, 356 days	Jan 7, 1957 – Jan 3, 1961	^[344]
John F. McGrath	Massachusetts	Democratic	Jan 10, 1881	25 years, 357 days	Jan 2, 1907 – Jan 6, 1909
Frank G. Dionesopulos	Wisconsin	Democratic	Jan 10, 1935	25 years, 359 days	Jan 3, 1961 – Jan 4, 1965	^[345]
Louis H. Warner	Massachusetts	Republican	Jan 8, 1875	25 years, 359 days	Jan 2, 1901 – Jan 6, 1904
Thomas H. Bayly	Virginia	Whig	Dec 11, 1810	25 years, 360 days	Dec 5, 1836 – Dec 5, 1842	Son of Thomas Monteagle Bayly. Later U.S. representative (1844–1856). Switched to the Democratic Party in 1841.
Thomas H. Bayly	Virginia	Democratic	Dec 11, 1810	25 years, 360 days	Dec 5, 1836 – Dec 5, 1842
Solomon F. Prouty	Iowa	Republican	Jan 17, 1854	25 years, 360 days	Jan 12, 1880 – Jan 8, 1882	Later U.S. representative (1911–1915).
Louis Waldman	New York	Socialist	Jan 5, 1892	25 years, 361 days	Jan 1, 1918 – Dec 31, 1918, Jan 1, 1920 – Apr 1, 1920	Later nominee for state attorney general (1924), nominee for governor (1928, 1930, 1932) and chair of the state Socialist Party (1930–1936). Switched to the American Labor Party in 1936.
Matthew Pouliot	Maine	Republican	Dec 9, 1986	25 years, 362 days	Dec 5, 2012 – Dec 5, 2018	Later state senator (2018–present).
James Borland Houston	Connecticut	Republican	Jan 10, 1859	25 years, 363 days	Jan 7, 1885 – Jan 5, 1887	^[346]
Wilfred A. LaFleur	Connecticut	Democratic	Jan 10, 1921	25 years, 363 days	Jan 8, 1947 – Jan 9, 1957, Jan 7, 1959 – Jan 6, 1965, Jan 4, 1967 – Jan 6, 1971	^[347]
William H. Wells	Delaware	Federalist	Jan 7, 1769	25 years, 364 days	Jan 6, 1795 – Jan 7, 1800 Jan 1, 1811 – Jan 5, 1814 Jan 5, 1819 – Jan 4, 1820	Later U.S. senator (1799–1804, 1813–1817).
Morris H. Broder	Connecticut	Republican	1907	25 years	Jan 4, 1933 – Jan 9, 1935	^[348]
John J. Burke	Connecticut	Democratic	1891	25 years	Jan 3, 1917 – Jan 8, 1919	^[349]
John J. Carroll	Connecticut	Democratic	1933	25 years	Jan 7, 1959 – Jan 4, 1961	^[350]
George Cutler	Connecticut	Republican	1893	25 years	Jan 5, 1921 – Jan 3, 1923	^[351]
Robert M. Dowling	Connecticut	Democratic	1907	25 years	Jan 4, 1933 – Jan 6, 1937	^[352]
Andrew Falk	Minnesota	Democratic	Apr 1983	25 years	Jan 6, 2009 – Jan 5, 2015
Uriah Forrest	Maryland	Independent	1756	25 years	Nov 5, 1781 – Nov 3, 1783, Nov 6, 1786 – Jan 15, 1787, Nov 5, 1787 – Nov 7, 1791	Later U.S. representative (1793–1794) and state senator (1796–1800).
Joseph H. Griffin	Washington	Republican	1881	25 years	Jan 14, 1907 – Jan 11, 1909, Jan 10, 1927 – Jan 12, 1931	^[259]^[353]^[354]
Marcus E. Helm	Connecticut	Republican	1883	25 years	Jan 6, 1909 – Jan 4, 1911	^[355]
Robert G. Jaekle	Connecticut	Republican	Apr 1951	25 years	Jan 5, 1977 – Jan 9, 1991	^[184]
Richard A. Keefe	Connecticut	Democratic	1933	25 years	Jan 7, 1959 – Jan 4, 1961	^[356]
Bill Logan	Oklahoma	Democratic	1913	25 years	Jan 3, 1939 – Jan 7, 1941	Later state senator (1941–1957) and state senate president pro tempore (1949–1951).
Richard L. Mercier	Connecticut	Democratic	1947	25 years	Jan 3, 1973 – Jan 5, 1983	^[357]
Stanley D. Morgan	Connecticut	Republican	1889	25 years	Jan 6, 1915 – Jan 3, 1917, Jan 7, 1931 – Jan 9, 1935, Jan 3, 1951 – Jan 7, 1953	^[358] Later state senator (1935–1937).
Adolph Parizek	Connecticut	Republican	1893	25 years	Jan 8, 1919 – 1919	^[359]
Thomas J. Ryle	Connecticut	Democratic	1887	25 years	Jan 8, 1913 – Jan 6, 1915	^[360]
Paul A. Siladi Jr.	Connecticut	Republican	Mar 1947	25 years	Jan 3, 1973 – Jan 8, 1975	^[361]
William J. Smith	Connecticut	Republican	1897	25 years	Jan 8, 1923 – Jan 7, 1925	^[264]
Stanley Yesukiewicz	Connecticut	Democratic	1907	25 years	Jan 9, 1935 – Jan 6, 1937, Jan 8, 1947 – Jan 9, 1957	^[362]

Territorial legislators

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.


Name	Territory	Political party	Date of birth	Age upon taking office	Tenure	Notes
Luis Ángel Torres Torres	Puerto Rico	Independence	Jul 26, 1948	24 years, 166 days	Jan 8, 1973 –[?]	^[363]^[364]
Zilpher Jennings	American Samoa	Independent	Jun 13, 1928	24 years, 233 days	Feb 1, 1953 – 1954	One of the first two women elected to the American Samoa House of Representatives.
Benigno Aquino Sr.	Philippines	Nacionalista	Sep 3, 1894	24 years, 273 days	Jun 3, 1919 – Jun 5, 1928	Son of Servillano Aquino. Later territorial senator (1928–1934), member of the National Assembly (1935–1938, 1943–1944) and speaker of the Philippine House (1943–1944).
Mariano Jesús Cuenco	Philippines	Nacionalista	Jan 16, 1888	24 years, 274 days	Oct 16, 1912 – Jul 26, 1928	Later governor of Cebu (1931–1934), secretary of public works and communications (1936–1939), Philippine senator (1946–1951, 1953–1964) and senate president (1949–1951).
Danny López Soto	Puerto Rico	New Progressive	Mar 13, 1944	24 years, 295 days	Jan 2, 1969 – Jan 1, 1977	Later territorial senator (1977–1985). Co-founder of the New Progressive Party (1967).
Melinda Romero Donnelly	Puerto Rico	New Progressive	Oct 8, 1971	25 years, 86 days	Jan 2, 1997 – Jan 1, 2005	Daughter of Carlos Romero Barceló. Later territorial senator (2009–2013) and shadow U.S. senator (2021–present).
Benny Frankie Cerezo	Puerto Rico	New Progressive	Sep 27, 1943	25 years, 97 days	Jan 2, 1969 – Jan 1, 1973	Co-founder of the New Progressive Party (1967).
Jorge de Castro Font	Puerto Rico	Popular Democratic	Sep 10, 1963	25 years, 114 days	Jan 2, 1989 – Jan 1, 2005	Left the Popular Democratic Party in August 2001, and joined the New Progressive Party in September 2002. Later territorial senator (2005–2009) and senate majority leader (2005).
		Independent
		New Progressive
Miguel Raffiñan	Philippines	Nacionalista	May 13, 1891	25 years, 156 days	Oct 16, 1916 – Oct 27, 1922, Jul 16, 1931 – Jul 16, 1934, Jan 24, 1939 – Dec 16, 1941	Later mayor of Cebu City (1947–1951).
Teodoro Kalaw	Philippines	Nacionalista	Mar 31, 1884	25 years, 199 days	Oct 16, 1909 – Oct 16, 1912	Later territorial secretary of the interior (1920–1922).
Jenniffer González	Puerto Rico	New Progressive	Aug 5, 1976	25 years, 207 days	Feb 28, 2002 – Jan 2, 2017	Later speaker of the House (2009–2013), minority leader (2013–2017), chair of the territorial Republican Party (2015–2021) and resident commissioner (2017–present).
Kurt Moylan	Guam	Independent	Jan 14, 1939	25 years, 356 days	Jan 4, 1965 – Jan 2, 1967	Later co-founder of the territorial Republican Party (1966), secretary of the territory (1969–1971) and lieutenant governor (1971–1975).
Kurt Moylan	Guam	Republican	Jan 14, 1939	25 years, 356 days	Jan 4, 1965 – Jan 2, 1967
Samuel Ioka Ale Meleisea	American Samoa	Independent	Mar 1991	25 years	Jan 3, 2017 – present

Overview

List

Territorial legislators

References