Since Iowa became a U.S. state in 1846, it has sent congressional delegations to the United States Senate and United States House of Representatives. Each state elects two senators to serve for six years, and members of the House to two-year terms. Before becoming a state, the Iowa Territory elected a non-voting delegate at-large to Congress from 1838 to 1846.

These are tables of congressional delegations from Iowa to the United States Senate and the United States House of Representatives.^[1]

Current delegation

Current U.S. senators from Iowa

Iowa

CPVI (2021):^[2]
R+6

Class II senator

Class III senator

Joni Ernst
(Junior senator)

Chuck Grassley
(Senior senator)

Party

Republican

Incumbent since

January 3, 2015

January 3, 1981

Iowa's current congressional delegation in the 117th Congress consists of its two senators, both of whom are Republicans, and its four representatives: three Republicans and one Democrat.

The current dean of the Iowa delegation is Senator and President pro tempore emeritus of the United States Senate Chuck Grassley, having served in the Senate since 1981 and in Congress since 1975.

Current U.S. representatives from Iowa
District	Member (Residence)^[3]	Party	Incumbent since	CPVI (2021)^[4]	District map
1st	Ashley Hinson (Marion)	Republican	January 3, 2021	R+4
2nd	Mariannette Miller-Meeks (Ottumwa)	Republican	January 3, 2021	R+4
3rd	Cindy Axne (West Des Moines)	Democratic	January 3, 2019	R+3
4th	Randy Feenstra (Hull)	Republican	January 3, 2021	R+16

United States Senate

Main article: List of United States senators from Iowa

Class II senator	Congress
George Wallace Jones (D)	30th (1847–1849)	Augustus C. Dodge (D)
	31st (1849–1851)
	32nd (1851–1853)
	33rd (1853–1855)
	34th (1855–1857)	James Harlan (R)
	35th (1857–1859)
James W. Grimes (R)	36th (1859–1861)
	37th (1861–1863)
	38th (1863–1865)
	39th (1865–1867)
	39th (1865–1867)	Samuel J. Kirkwood (R)
	40th (1867–1869)	James Harlan (R)
	41st (1869–1871)
James B. Howell (R)	41st (1869–1871)
George G. Wright (R)	42nd (1871–1873)
	43rd (1873–1875)	William B. Allison (R)
	44th (1875–1877)
Samuel J. Kirkwood (R)	45th (1877–1879)
	46th (1879–1881)
	47th (1881–1883)
James W. McDill (R)	47th (1881–1883)
James F. Wilson (R)	48th (1883–1885)
	49th (1885–1887)
	50th (1887–1889)
	51st (1889–1891)
	52nd (1891–1893)
	53rd (1893–1895)
John H. Gear (R)	54th (1895–1897)
	55th (1897–1899)
	56th (1899–1901)
Jonathan P. Dolliver (R)	56th (1899–1901)
	57th (1901–1903)
	58th (1903–1905)
	59th (1905–1907)
	60th (1907–1909)
	60th (1907–1909)	Albert B. Cummins (R)
	61st (1909–1911)
Lafayette Young (R)	61st (1909–1911)
Lafayette Young (R)	62nd (1911–1913)
William S. Kenyon (R)	62nd (1911–1913)
	63rd (1913–1915)
	64th (1915–1917)
	65th (1917–1919)
	66th (1919–1921)
	67th (1921–1923)
Charles A. Rawson (R)
Smith W. Brookhart (R)
	68th (1923–1925)
	69th (1925–1927)
Daniel F. Steck (D)	69th (1925–1927)	David W. Stewart (R)
	70th (1927–1929)	Smith W. Brookhart (R)
	71st (1929–1931)
Lester J. Dickinson (R)	72nd (1931–1933)
	73rd (1933–1935)	Richard L. Murphy (D)
	74th (1935–1937)	Richard L. Murphy (D)
	74th (1935–1937)	Guy Gillette (D)
Clyde L. Herring (D)	75th (1937–1939)
	76th (1939–1941)
	77th (1941–1943)
George A. Wilson (R)	78th (1943–1945)
	79th (1945–1947)	Bourke B. Hickenlooper (R)
	80th (1947–1949)
Guy Gillette (D)	81st (1949–1951)
	82nd (1951–1953)
	83rd (1953–1955)
Thomas E. Martin (R)	84th (1955–1957)
	85th (1957–1959)
	86th (1959–1961)
Jack Miller (R)	87th (1961–1963)
	88th (1963–1965)
	89th (1965–1967)
	90th (1967–1969)
	91st (1969–1971)	Harold Hughes (D)
	92nd (1971–1973)
Dick Clark (D)	93rd (1973–1975)
	94th (1975–1977)	John Culver (D)
	95th (1977–1979)
Roger Jepsen (R)	96th (1979–1981)
	97th (1981–1983)	Chuck Grassley (R)
	98th (1983–1985)
Tom Harkin (D)	99th (1985–1987)
	100th (1987–1989)
	101st (1989–1991)
	102nd (1991–1993)
	103rd (1993–1995)
	104th (1995–1997)
	105th (1997–1999)
	106th (1999–2001)
	107th (2001–2003)
	108th (2003–2005)
	109th (2005–2007)
	110th (2007–2009)
	111th (2009–2011)
	112th (2011–2013)
	113th (2013–2015)
Joni Ernst (R)	114th (2015–2017)
	115th (2017–2019)
	116th (2019–2021)
	117th (2021–2023)

United States House of Representatives

Main article: List of United States representatives from Iowa

1838–1846: 1 non-voting delegate

On July 4, 1838, the Iowa Territory was organized. Most of the area comprising the territory was originally part of the Louisiana Purchase and was a part of the Missouri Territory. When Missouri became a state in 1821, this area (along with the Dakotas) effectively became unorganized territory. The area was closed to white settlers until the 1830s, after the Black Hawk War ended. It was attached to the Michigan Territory on June 28, 1834, and was split off with the Wisconsin Territory in 1836 when Michigan became a state. The Iowa Territory was the "Iowa District" of western Wisconsin Territory – the region west of the Mississippi River. The original boundaries of the territory, as established in 1838, included part of Minnesota and parts of the Dakotas, covering about 194,000 square miles (500,000 km²) of land.

Starting on September 10, 1838, Iowa Territory sent a non-voting delegate to the House.

Years	Delegate from Territory's at-large district
September 10, 1838 – October 27, 1840	William W. Chapman (D)
October 28, 1840 – December 28, 1846	Augustus C. Dodge (D)

1846–1863: 2 seats

Following statehood on December 28, 1846, Iowa had two seats in the House. It elected both seats statewide at-large on a general ticket, until 1847, when it redistricted into two districts.

Congress	Elected on a general ticket from Iowa's at-large district
Congress	1st seat	2nd seat
29th (1845–1847)	Serranus Clinton Hastings (D)	Shepherd Leffler (D)
Congress	District
Congress	1st	2nd
30th (1847–1849)	William Thompson (D)	Shepherd Leffler (D)
31st (1849–1851)	William Thompson (D)
31st (1849–1851)	Daniel F. Miller (W)
32nd (1851–1853)	Bernhart Henn (D)	Lincoln Clark (D)
33rd (1853–1855)	Bernhart Henn (D)	John Parsons Cook (W)
34th (1855–1857)	Augustus Hall (D)	James Thorington (W)
35th (1857–1859)	Samuel Ryan Curtis (R)	Timothy Davis (R)
36th (1859–1861)		William Vandever (R)
37th (1861–1863)
37th (1861–1863)	James F. Wilson (R)

1863–1873: 6 seats

Following the 1860 census, Iowa was apportioned 6 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th
38th (1863–1865)	James F. Wilson (R)	Hiram Price (R)	William B. Allison (R)	Josiah Bushnell Grinnell (R)	John A. Kasson (R)	Asahel W. Hubbard (R)
39th (1865–1867)				Josiah Bushnell Grinnell (R)	John A. Kasson (R)
40th (1867–1869)				William Loughridge (R)	Grenville M. Dodge (R)
41st (1869–1871)	George W. McCrary (R)	William Smyth (R)			Francis W. Palmer (R)	Charles Pomeroy (R)
41st (1869–1871)		William P. Wolf (R)				Charles Pomeroy (R)
42nd (1871–1873)		Aylett R. Cotton (R)	William G. Donnan (R)	Madison M. Walden (R)		Jackson Orr (R)

1873–1883: 9 seats

Following the 1870 census, Iowa was apportioned 9 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th
43rd (1873–1875)	George W. McCrary (R)	Aylett R. Cotton (R)	William G. Donnan (R)	Henry Otis Pratt (R)	James Wilson (R)	William Loughridge (R)	John A. Kasson (R)	James W. McDill (R)	Jackson Orr (R)
44th (1875–1877)	George W. McCrary (R)	John Q. Tufts (R)	L. L. Ainsworth (D)	Henry Otis Pratt (R)	James Wilson (R)	Ezekiel S. Sampson (R)	John A. Kasson (R)	James W. McDill (R)	S. Addison Oliver (R)
45th (1877–1879)	Joseph Champlin Stone (R)	Hiram Price (R)	Theodore Weld Burdick (R)	Nathaniel Cobb Deering (R)	Rush Clark (R)	Ezekiel S. Sampson (R)	Henry J. B. Cummings (R)	William Fletcher Sapp (R)	S. Addison Oliver (R)
46th (1879–1881)	Moses A. McCoid (R)		Thomas Updegraff (R)		Rush Clark (R)	James B. Weaver (GB)	Edward H. Gillette (GB)		Cyrus C. Carpenter (R)
46th (1879–1881)					William George Thompson (R)	James B. Weaver (GB)	Edward H. Gillette (GB)
47th (1881–1883)		Sewall S. Farwell (R)				Marsena E. Cutts (R)	John A. Kasson (R)	William Peters Hepburn (R)
47th (1881–1883)		Sewall S. Farwell (R)				John C. Cook (D)	John A. Kasson (R)	William Peters Hepburn (R)

1883–1933: 11 seats

Following the 1880 census, Iowa was apportioned 11 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th	11th
48th (1883–1885)	Moses A. McCoid (R)	Jeremiah Henry Murphy (D)	David B. Henderson (R)	Luman Hamlin Weller (GB)	Jim Wilson (R)	Marsena E. Cutts (R)	John A. Kasson (R)	William Peters Hepburn (R)	William Henry Mills Pusey (D)	Adoniram J. Holmes (R)	Isaac S. Struble (R)
48th (1883–1885)	Moses A. McCoid (R)			Luman Hamlin Weller (GB)	Benjamin T. Frederick (D)	John Cook (D)	Hiram Smith (R)		William Henry Mills Pusey (D)
49th (1885–1887)	Ben Hall (D)			William E. Fuller (R)	Benjamin T. Frederick (D)	James B. Weaver (GB)	Edwin H. Conger (R)		Joseph Lyman (R)
50th (1887–1889)	John H. Gear (R)	Walter I. Hayes (D)		William E. Fuller (R)	Daniel Kerr (R)	James B. Weaver (GB)		Albert R. Anderson (IR)	Joseph Lyman (R)
51st (1889–1891)				Joseph Henry Sweney (R)		John F. Lacey (R)		James Patton Flick (R)	Joseph Rea Reed (R)	Jonathan P. Dolliver (R)
51st (1889–1891)				Joseph Henry Sweney (R)		John F. Lacey (R)	Edward Hays (R)		Joseph Rea Reed (R)
52nd (1891–1893)	John Joseph Seerley (D)			Walter Halben Butler (D)	John Taylor Hamilton (D)	Frederick E. White (D)	John A. T. Hull (R)		Thomas Bowman (D)		George D. Perkins (R)
53rd (1893–1895)	John Gear (R)			Thomas Updegraff (R)	Robert G. Cousins (R)	John F. Lacey (R)		William Peters Hepburn (R)	Alva L. Hager (R)
54th (1895–1897)	Samuel M. Clark (R)	George M. Curtis (R)
55th (1897–1899)	Samuel M. Clark (R)	George M. Curtis (R)
56th (1899–1901)	Thomas Hedge (R)	Joe Lane (R)		Gilbert N. Haugen (R)					Smith McPherson (R)		Lot Thomas (R)
56th (1899–1901)		Joe Lane (R)							Walter I. Smith (R)	James Perry Conner (R)
57th (1901–1903)		John Rumple (R)
58th (1903–1905)		Martin Wade (D)	Benjamin P. Birdsall (R)
59th (1905–1907)		Albert F. Dawson (R)									Elbert H. Hubbard (R)
60th (1907–1909)	Charles A. Kennedy (R)					Daniel W. Hamilton (D)
61st (1909–1911)			Charles E. Pickett (R)		James William Good (R)	Nathan E. Kendall (R)		William Darius Jamieson (D)		Frank P. Woods (R)
62nd (1911–1913)		Irvin S. Pepper (D)					Solomon F. Prouty (R)	Horace Mann Towner (R)
62nd (1911–1913)									William R. Green (R)		George C. Scott (R)
63rd (1913–1915)			Maurice Connolly (D)			Sanford Kirkpatrick (D)
63rd (1913–1915)		Henry Vollmer (D)	Maurice Connolly (D)			Sanford Kirkpatrick (D)
64th (1915–1917)		Harry E. Hull (R)	Burton E. Sweet (R)			Christian William Ramseyer (R)	Cassius C. Dowell (R)				Thomas J. Steele (D)
65th (1917–1919)											George C. Scott (R)
66th (1919–1921)										Lester J. Dickinson (R)	William D. Boies (R)
67th (1921–1923)	William F. Kopp (R)
67th (1921–1923)					Cyrenus Cole (R)
68th (1923–1925)			Thomas J. B. Robinson (R)
68th (1923–1925)								Hiram Evans (R)
69th (1925–1927)		F. Dickinson Letts (R)						Lloyd Thurston (R)
70th (1927–1929)
70th (1927–1929)									Earl Vincent (R)
71st (1929–1931)									Charles Edward Swanson (R)		Ed H. Campbell (R)
72nd (1931–1933)		Bernhard M. Jacobsen (D)							Charles Edward Swanson (R)	Fred C. Gilchrist (R)	Ed H. Campbell (R)
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th	11th
Congress	District

1933–1943: 9 seats

Following the 1930 census, Iowa was apportioned 9 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th	9th
73rd (1933–1935)	Edward C. Eicher (D)	Bernhard M. Jacobsen (D)	Albert Willford (D)	Fred Biermann (D)	Lloyd Thurston (R)	Cassius C. Dowell (R)	Otha Wearin (D)	Fred C. Gilchrist (R)	Guy Gillette (D)
74th (1935–1937)		Bernhard M. Jacobsen (D)	John W. Gwynne (R)			Hubert Utterback (D)			Guy Gillette (D)
75th (1937–1939)		William S. Jacobsen (D)				Cassius C. Dowell (R)			Vincent F. Harrington (D)
76th (1939–1941)	Thomas E. Martin (R)			Henry O. Talle (R)	Karl M. LeCompte (R)	Cassius C. Dowell (R)	Ben F. Jensen (R)
77th (1941–1943)						Paul Cunningham (R)
77th (1941–1943)						Paul Cunningham (R)			Harry Narey (R)

1943–1963: 8 seats

Following the 1940 census, Iowa was apportioned 8 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th	8th
78th (1943–1945)	Thomas E. Martin (R)	Henry O. Talle (R)	John W. Gwynne (R)	Karl M. LeCompte (R)	Paul Cunningham (R)	Fred C. Gilchrist (R)	Ben F. Jensen (R)	Charles B. Hoeven (R)
79th (1945–1947)						James I. Dolliver (R)
80th (1947–1949)
81st (1949–1951)			H. R. Gross (R)
82nd (1951–1953)
83rd (1953–1955)
84th (1955–1957)	Fred Schwengel (R)
85th (1957–1959)						Merwin Coad (D)
86th (1959–1961)		Leonard G. Wolf (D)		Steven V. Carter (D)	Neal Smith (D)
87th (1961–1963)		James E. Bromwell (R)		John Henry Kyl (R)	Neal Smith (D)

1963–1973: 7 seats

Following the 1960 census, Iowa was apportioned 7 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th	7th
88th (1963–1965)	Fred Schwengel (R)	James E. Bromwell (R)	H. R. Gross (R)	John Henry Kyl (R)	Neal Smith (D)	Charles B. Hoeven (R)	Ben F. Jensen (R)
89th (1965–1967)	John R. Schmidhauser (D)	John Culver (D)		Bert Bandstra (D)		Stanley L. Greigg (D)	John R. Hansen (D)
90th (1967–1969)	Fred Schwengel (R)			John Henry Kyl (R)		Wiley Mayne (R)	William J. Scherle (R)
91st (1969–1971)
92nd (1971–1973)

1973–1993: 6 seats

Following the 1970 census, Iowa was apportioned 6 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th	6th
93rd (1973–1975)	Edward Mezvinsky (D)	John Culver (D)	H. R. Gross (R)	Neal Smith (D)	William Scherle (R)	Wiley Mayne (R)
94th (1975–1977)	Edward Mezvinsky (D)	Mike Blouin (D)	Chuck Grassley (R)		Tom Harkin (D)	Berkley Bedell (D)
95th (1977–1979)	Jim Leach (R)	Mike Blouin (D)
96th (1979–1981)		Tom Tauke (R)
97th (1981–1983)			T. Cooper Evans (R)
98th (1983–1985)
99th (1985–1987)					Jim Ross Lightfoot (R)
100th (1987–1989)			Dave Nagle (D)			Fred Grandy (R)
101st (1989–1991)
102nd (1991–1993)		Jim Nussle (R)

1993–2013: 5 seats

Following the 1990 census, Iowa was apportioned 5 seats.

Congress	District
Congress	1st	2nd	3rd	4th	5th
103rd (1993–1995)	Jim Leach (R)	Jim Nussle (R)	Jim Ross Lightfoot (R)	Neal Smith (D)	Fred Grandy (R)
104th (1995–1997)			Jim Ross Lightfoot (R)	Greg Ganske (R)	Tom Latham (R)
105th (1997–1999)			Leonard Boswell (D)
106th (1999–2001)
107th (2001–2003)
108th (2003–2005)	Jim Nussle (R)	Jim Leach (R)		Tom Latham (R)	Steve King (R)
109th (2005–2007)	Jim Nussle (R)	Jim Leach (R)
110th (2007–2009)	Bruce Braley (D)	Dave Loebsack (D)
111th (2009–2011)
112th (2011–2013)

2013–present: 4 seats

Following the 2010 census, Iowa was apportioned 4 seats.

Congress	District
Congress	1st	2nd	3rd	4th
113th (2013–2015)	Bruce Braley (D)	Dave Loebsack (D)	Tom Latham (R)	Steve King (R)
114th (2015–2017)	Rod Blum (R)		David Young (R)
115th (2017–2019)	Rod Blum (R)		David Young (R)
116th (2019–2021)	Abby Finkenauer (D)		Cindy Axne (D)
117th (2021–2023)	Ashley Hinson (R)	Mariannette Miller-Meeks (R)	Cindy Axne (D)	Randy Feenstra (R)

Key

Democratic (D)
Greenback (GB)
Republican (R)
Whig (W)

References

^ "The national atlas". nationalatlas.gov. Archived from the original on February 22, 2014. Retrieved February 2, 2014.
^ "Introducing the 2021 Cook Political Report Partisan Voter Index". Cook Political Report. Retrieved 2022-01-17.
^ "Office of the Clerk, U.S. House of Representatives". clerk.house.gov. Retrieved 2022-01-06.
^ "Introducing the 2021 Cook Political Report Partisan Voter Index". Cook Political Report. Retrieved 2022-01-06.

v t e State of Iowa
Des Moines (capital)
Topics	Archaeology Area codes Attorney General Auditor of State Capitol Code Congressional districts Crime Delegations Representatives Senators Elections Caucuses Environment Flag Governor History Historic Places Index Legislature House Senate Museums People Native Americans Political parties Democratic Libertarian Republican Seal Secretary of Agriculture Secretary of State State Parks Supreme Court Symbols Treasurer of State
Regions	Coteau des Prairies Des Moines metropolitan area Dissected Till Plains Driftless Area Great River Road Honey Lands Iowa Great Lakes Loess Hills Omaha–Council Bluffs metropolitan area Quad Cities Siouxland
Largest cities	Ames Ankeny Bettendorf Burlington Cedar Falls Cedar Rapids Clinton Council Bluffs Davenport Des Moines Dubuque Fort Dodge Iowa City Marion Marshalltown Mason City Muscatine Ottumwa Sioux City Urbandale Waterloo West Des Moines
Counties	Adair Adams Allamakee Appanoose Audubon Benton Black Hawk Boone Bremer Buchanan Buena Vista Butler Calhoun Carroll Cass Cedar Cerro Gordo Cherokee Chickasaw Clarke Clay Clayton Clinton Crawford Dallas Davis Decatur Delaware Des Moines Dickinson Dubuque Emmet Fayette Floyd Franklin Fremont Greene Grundy Guthrie Hamilton Hancock Hardin Harrison Henry Howard Humboldt Ida Iowa Jackson Jasper Jefferson Johnson Jones Keokuk Kossuth Lee Linn Louisa Lucas Lyon Madison Mahaska Marion Marshall Mills Mitchell Monona Monroe Montgomery Muscatine O'Brien Osceola Page Palo Alto Plymouth Pocahontas Polk Pottawattamie Poweshiek Ringgold Sac Scott Shelby Sioux Story Tama Taylor Union Van Buren Wapello Warren Washington Wayne Webster Winnebago Winneshiek Woodbury Worth Wright
Iowa portal

v t e Iowa's current delegation to the United States Congress
Senators	▌Chuck Grassley (R) ▌Joni Ernst (R)
Representatives (ordered by district)	▌Ashley Hinson (R) ▌Mariannette Miller-Meeks (R) ▌Cindy Axne (D) ▌Randy Feenstra (R)

v t e Lists of United States congressional delegations
States	Alabama H S Alaska H S Arizona H S Arkansas H S California H S Colorado H S Connecticut H S Delaware H S Florida H S Georgia H S Hawaii H S Idaho H S Illinois H S Indiana H S Iowa H S Kansas H S Kentucky H S Louisiana H S Maine H S Maryland H S Massachusetts H S Michigan H S Minnesota H S Mississippi H S Missouri H S Montana H S Nebraska H S Nevada H S New Hampshire H S New Jersey H S New Mexico H S New York H S North Carolina H S North Dakota H S Ohio H S Oklahoma H S Oregon H S Pennsylvania H S Rhode Island H S South Carolina H S South Dakota H S Tennessee H S Texas H S Utah H S Vermont H S Virginia H S Washington H S West Virginia H S Wisconsin H S Wyoming H S
Others	American Samoa Cherokee District of Columbia Guam Northern Mariana Islands Puerto Rico U.S. Virgin Islands
Obsolete	Dakota Territory Northwest Territory Orleans Territory Philippines Southwest Territory
Lists of former House members List of former senators