Since Colorado became a U.S. state in 1876, 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 Colorado Territory elected a non-voting delegate at-large to Congress from 1861 to 1876.

These are tables of congressional delegations from Colorado to the United States Senate and the United States House of Representatives.

Current delegation

Current U.S. senators from Colorado

CPVI (2021)[1]:
Class II senator Class III senator
John Hickenlooper, official portrait, 117th Congress (cropped).jpeg

John Hickenlooper
(Junior senator)
Michael Bennet Official Photo (cropped).jpg

Michael Bennet
(Senior senator)
Party Democratic Democratic
Incumbent since January 3, 2021 January 21, 2009

Colorado's current congressional delegation in the 117th Congress consists of its two senators, both of whom are Democrats, and its seven representatives: 4 Democrats and 3 Republicans.

The current dean of the Colorado delegation is Representative Diana DeGette of the 1st district, having served in the House since 1997.

Current U.S. representatives from Colorado
District Member
Party Incumbent since CPVI
District map
Diana DeGette official photo (cropped).jpg

Diana DeGette
Democratic January 3, 1997 D+24
Colorado US Congressional District 1 (since 2013).tif
Joe Neguse, official portrait, 116th Congress.jpg

Joe Neguse
Democratic January 3, 2019 D+12
Colorado US Congressional District 2 (since 2013).tif
Lauren Boebert 117th U.S Congress.jpg

Lauren Boebert
Republican January 3, 2021 R+6
Colorado US Congressional District 3 (since 2013).tif
Ken Buck official congressional photo (cropped 2).jpg

Ken Buck
Republican January 3, 2015 R+12
Colorado US Congressional District 4 (since 2013).tif
Doug Lamborn official portrait.jpg

Doug Lamborn
(Colorado Springs)
Republican January 3, 2007 R+12
Colorado US Congressional District 5 (since 2013).tif
Jason Crow, official portrait, 116th Congress.jpg

Jason Crow
Democratic January 3, 2019 D+6
Colorado US Congressional District 6 (since 2013).tif
Ed Perlmutter official photo.jpg

Ed Perlmutter
Democratic January 3, 2007 D+7
Colorado US Congressional District 7 (since 2013).tif

United States Senate

Main article: List of United States senators from Colorado

Class II senator Congress Class III senator
Colorado statehood August 1, 1876
Henry M. Teller (R) 44th (1875–1877) Jerome B. Chaffee (R)
45th (1877–1879)
46th (1879–1881) Nathaniel P. Hill (R)
47th (1881–1883)
George M. Chilcott (R)
Horace Tabor (R)
Thomas M. Bowen (R) 48th (1883–1885)
49th (1885–1887) Henry M. Teller (R)
50th (1887–1889)
Edward O. Wolcott (R) 51st (1889–1891)
52nd (1891–1893)
53rd (1893–1895)
54th (1895–1897)
55th (1897–1899) Henry M. Teller (SvR)
56th (1899–1901)
Thomas M. Patterson (D) 57th (1901–1903)
58th (1903–1905) Henry M. Teller (D)
59th (1905–1907)
Simon Guggenheim (R) 60th (1907–1909)
61st (1909–1911) Charles J. Hughes Jr. (D)
62nd (1911–1913) Charles S. Thomas (D)
John F. Shafroth (D) 63rd (1913–1915)
64th (1915–1917)
65th (1917–1919)
Lawrence C. Phipps (R) 66th (1919–1921)
67th (1921–1923) Samuel D. Nicholson (R)
68th (1923–1925)
Alva B. Adams (D)
Rice W. Means (R)
69th (1925–1927)
70th (1927–1929) Charles W. Waterman (R)
71st (1929–1931)
Edward P. Costigan (D) 72nd (1931–1933)
Walter Walker (D)
Karl C. Schuyler (R)
73rd (1933–1935) Alva B. Adams (D)
74th (1935–1937)
Edwin C. Johnson (D) 75th (1937–1939)
76th (1939–1941)
77th (1941–1943)
Eugene Millikin (R)
78th (1943–1945)
79th (1945–1947)
80th (1947–1949)
81st (1949–1951)
82nd (1951–1953)
83rd (1953–1955)
Gordon Allott (R) 84th (1955–1957)
85th (1957–1959) John A. Carroll (D)
86th (1959–1961)
87th (1961–1963)
88th (1963–1965) Peter H. Dominick (R)
89th (1965–1967)
90th (1967–1969)
91st (1969–1971)
92nd (1971–1973)
Floyd Haskell (D) 93rd (1973–1975)
94th (1975–1977) Gary Hart (D)
95th (1977–1979)
William L. Armstrong (R) 96th (1979–1981)
97th (1981–1983)
98th (1983–1985)
99th (1985–1987)
100th (1987–1989) Tim Wirth (D)
101st (1989–1991)
Hank Brown (R) 102nd (1991–1993)
103rd (1993–1995) Ben Nighthorse Campbell (D)
104th (1995–1997) Ben Nighthorse Campbell (R)
Wayne Allard (R) 105th (1997–1999)
106th (1999–2001)
107th (2001–2003)
108th (2003–2005)
109th (2005–2007) Ken Salazar (D)
110th (2007–2009)
Mark Udall (D) 111th (2009–2011)
Michael Bennet (D)
112th (2011–2013)
113th (2013–2015)
Cory Gardner (R) 114th (2015–2017)
115th (2017–2019)
116th (2019–2021)
John Hickenlooper (D) 117th (2021–2023)

United States House of Representatives

1861–1876: 1 non-voting delegate

Starting on August 19, 1861, Colorado Territory sent a non-voting delegate to the House.

Congress Delegate from
Territory's at-large district
37th (1861–1863) Hiram Pitt Bennet (Cons. R)
38th (1863–1865)
39th (1865–1867) Allen Alexander Bradford (R)
40th (1867–1869) George M. Chilcott (R)
41st (1869–1871) Allen Alexander Bradford (R)
42nd (1871–1873) Jerome B. Chaffee (R)
43rd (1873–1875)
44th (1875–1877) Thomas M. Patterson (D)

1876–1893: 1 seat

Following statehood on August 1, 1876, Colorado had one seat in the House.

Congress At-large district
44th (1875–1877) James B. Belford (R)
45th (1877–1879)
Thomas M. Patterson (D)
46th (1879–1881) James B. Belford (R)
47th (1881–1883)
48th (1883–1885)
49th (1885–1887) George G. Symes (R)
50th (1887–1889)
51st (1889–1891) Hosea Townsend (R)
52nd (1891–1893)

1893–1903: 2 seats

Following 1890 census, Colorado was apportioned two seats.

Congress District
1st 2nd
53rd (1893–1895) Lafe Pence (Pop) John Calhoun Bell (Pop)
54th (1895–1897) John F. Shafroth (R)
55th (1897–1899) John F. Shafroth (Sv)
56th (1899–1901)
57th (1901–1903)

1903–1913: 3 seats

Following 1900 census, Colorado was apportioned three seats.

Congress District At-large
1st 2nd
58th (1903–1905) John F. Shafroth (D) Herschel M. Hogg (R) Franklin E. Brooks (R)
Robert W. Bonynge (R)
59th (1905–1907)
60th (1907–1909) Warren A. Haggott (R) George W. Cook (R)
61st (1909–1911) Atterson W. Rucker (D) John Andrew Martin (D) Edward T. Taylor (D)
62nd (1911–1913)

1913–1973: 4 seats

Following 1910 census, Colorado was apportioned four seats.

Congress District At-large
1st 2nd Seat A Seat B
63rd (1913–1915) George John Kindel (D) Harry H. Seldomridge (D) Edward Keating (D) Edward T. Taylor (D)
64th (1915–1917) Benjamin C. Hilliard (D) Charles B. Timberlake (R) 3rd district 4th district
Edward Keating (D) Edward T. Taylor (D)
65th (1917–1919)
66th (1919–1921) William N. Vaile (R) Guy U. Hardy (R)
67th (1921–1923)
68th (1923–1925)
69th (1925–1927)
70th (1927–1929)
S. Harrison White (D)
71st (1929–1931) William R. Eaton (R)
72nd (1931–1933)
73rd (1933–1935) Lawrence Lewis (D) Fred N. Cummings (D) John Andrew Martin (D)
74th (1935–1937)
75th (1937–1939)
76th (1939–1941)
William E. Burney (D)
77th (1941–1943) William S. Hill (R) John Chenoweth (R)
Robert F. Rockwell (R)
78th (1943–1945)
Dean M. Gillespie (R)
79th (1945–1947)
80th (1947–1949) John A. Carroll (D)
81st (1949–1951) John H. Marsalis (D) Wayne N. Aspinall (D)
82nd (1951–1953) Byron G. Rogers (D) John Chenoweth (R)
83rd (1953–1955)
84th (1955–1957)
85th (1957–1959)
86th (1959–1961) Byron L. Johnson (D)
87th (1961–1963) Peter H. Dominick (R)
88th (1963–1965) Donald G. Brotzman (R)
89th (1965–1967) Roy H. McVicker (D) Frank Evans (D)
90th (1967–1969) Donald G. Brotzman (R)
91st (1969–1971)
92nd (1971–1973) Mike McKevitt (R)
Congress 1st 2nd 3rd 4th

1973–1983: 5 seats

Following 1970 census, Colorado was apportioned five seats.

Congress District
1st 2nd 3rd 4th 5th
93rd (1973–1975) Pat Schroeder (D) Donald G. Brotzman (R) Frank Evans (D) James Johnson (R) William L. Armstrong (R)
94th (1975–1977) Tim Wirth (D)
95th (1977–1979)
96th (1979–1981) Ray Kogovsek (D) Ken Kramer (R)
97th (1981–1983) Hank Brown (R)

1983–2003: 6 seats

Following 1980 census, Colorado was apportioned six seats.

Congress District
1st 2nd 3rd 4th 5th 6th
98th (1983–1985) Pat Schroeder (D) Tim Wirth (D) Ray Kogovsek (D) Hank Brown (R) Ken Kramer (R) Daniel Schaefer (R)
99th (1985–1987) Mike Strang (R)
100th (1987–1989) David Skaggs (D) Ben Nighthorse
Joel Hefley (R)
101st (1989–1991)
102nd (1991–1993) Wayne Allard (R)
103rd (1993–1995) Scott McInnis (R)
104th (1995–1997)
105th (1997–1999) Diana DeGette (D) Bob Schaffer (R)
106th (1999–2001) Mark Udall (D) Tom Tancredo (R)
107th (2001–2003)

2003–present: 7 seats

Following 2000 census, Colorado was apportioned seven seats.

Congress District
1st 2nd 3rd 4th 5th 6th 7th
108th (2003–2005) Diana DeGette
Mark Udall (D) Scott McInnis (R) Marilyn
Joel Hefley (R) Tom Tancredo
Bob Beauprez
109th (2005–2007) John Salazar (D)
110th (2007–2009) Doug Lamborn
Ed Perlmutter
111th (2009–2011) Jared Polis (D) Betsy Markey (D) Mike Coffman
112th (2011–2013) Scott Tipton (R) Cory Gardner (R)
113th (2013–2015)
114th (2015–2017) Ken Buck (R)
115th (2017–2019)
116th (2019–2021) Joe Neguse (D) Jason Crow (D)
117th (2021–2023) Lauren Boebert (R)


Democratic (D)
Populist (Pop)
Republican (R)
Silver (Sv)
Silver Republican (SvR)

See also


  1. ^ "Introducing the 2021 Cook Political Report Partisan Voter Index". Cook Political Report. Retrieved 2022-01-17.
  2. ^ "Office of the Clerk, U.S. House of Representatives". Retrieved 2022-01-06.
  3. ^ "Introducing the 2021 Cook Political Report Partisan Voter Index". Cook Political Report. Retrieved 2022-01-06.