Member / delegate | Party | District | Years | Notes |
Wayne Allard | Republican | 4th | January 3, 1991 – January 3, 1997 | Elected in 1990. Re-elected in 1992. Re-elected in 1994. Retired to run for U.S. Senator. |
William L. Armstrong | Republican | 5th | January 3, 1973 – January 3, 1979 | Elected in 1972. Re-elected in 1974. Re-elected in 1976. Retired to run for U.S. senator. |
Wayne N. Aspinall | Democratic | 4th | January 3, 1949 – January 3, 1973 | Elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Lost renomination to Alan Merson. |
Bob Beauprez | Republican | 7th | January 3, 2003 – January 3, 2007 | Elected in 2002. Re-elected in 2004. Retired after running for Governor of Colorado. |
James B. Belford | Republican | At-large | October 3, 1876 – December 13, 1877 | Elected in 1876. Lost contested election to Patterson. |
March 4, 1879 – March 4, 1885 | Elected in 1878. Re-elected in 1880. Re-elected in 1882. Lost renomination to Symes. |
John Calhoun Bell | Populist | 2nd | March 4, 1893 – March 4, 1903 | Elected in 1892. Re-lected in 1894. Re-elected in 1896. Re-elected in 1898. Re-elected in 1900. Lost re-election to Hogg. |
Hiram Pitt Bennet | Conservative Republican | Territory | August 19, 1861 – March 4, 1865 | Elected in 1861. Re-elected in 1862. Retired. |
Lauren Boebert | Republican | 3rd | January 3, 2021 – present | Elected in 2020. Re-elected in 2022. |
Robert W. Bonynge | Republican | 1st | February 16, 1904 – March 4, 1909 | Won contested election after Shafroth declared his conviction that his opponent was actually elected. Re-elected in 1904. Re-elected in 1906. Lost re-election to Rucker. |
Allen Alexander Bradford | Republican | Territory | March 4, 1865 – March 4, 1867 | Elected in 1864. Retired. |
March 4, 1869 – March 4, 1871 | Elected in 1868. Retired. |
Franklin E. Brooks | Republican | At-large | March 4, 1903 – March 4, 1907 | Elected in 1902. Re-elected in 1904. Retired. |
Donald G. Brotzman | Republican | 2nd | January 3, 1963 – January 3, 1965 | Elected in 1962. Lost re-election to McVicker. |
January 3, 1967 – January 3, 1975 | Elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Lost re-election to Wirth. |
Hank Brown | Republican | 4th | January 3, 1981 – January 3, 1991 | Elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Retired to run for U.S. Senator. |
Ken Buck | Republican | 4th | January 3, 2015 – March 22, 2024 | Elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. Resigned. |
William E. Burney | Democratic | 3rd | November 5, 1940 – January 3, 1941 | Elected to finish Martin's term. Retired. |
Ben Nighthorse Campbell | Democratic | 3rd | January 3, 1987 – January 3, 1993 | Elected in 1986. Re-elected in 1988. Re-elected in 1990. Retired to run for U.S. senator. |
Yadira Caraveo | Democratic | 8th | January 3, 2023 – present | Elected in 2022 |
John A. Carroll | Democratic | 1st | January 3, 1947 – January 3, 1951 | Elected in 1946. Re-elected in 1948. Retired to run for U.S. senator. |
Jerome B. Chaffee | Republican | Territory | March 4, 1871 – March 4, 1875 | Elected in 1870. Re-elected in 1872. Retired. |
John Chenoweth | Republican | 3rd | January 3, 1941 – January 3, 1949 | Elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Lost re-election to Marsalis. |
January 3, 1951 – January 3, 1965 | Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Lost re-election to Evans. |
George M. Chilcott | Republican | Territory | March 4, 1867 – March 4, 1869 | Elected in 1866. Retired. |
Mike Coffman | Republican | 6th | January 3, 2009 – January 3, 2019 | Elected in 2008. Re-elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Lost re-election to Crow. |
George W. Cook | Republican | At-large | March 4, 1907 – March 4, 1909 | Elected in 1906. Retired. |
Jason Crow | Democratic | 6th | January 3, 2019 – present | Elected in 2018. Re-elected in 2020. Re-elected in 2022. |
Fred N. Cummings | Democratic | 2nd | March 4, 1933 – January 3, 1941 | Elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Lost re-election to Hill. |
Diana DeGette | Democratic | 1st | January 3, 1997 – present | Elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. |
Peter H. Dominick | Republican | 2nd | January 3, 1961 – January 3, 1963 | Elected in 1960. Retired to Run for U.S. senator. |
William R. Eaton | Republican | 1st | March 4, 1929 – March 4, 1933 | Elected in 1928. Re-elected in 1930. Lost re-election to Lewis. |
Frank Evans | Democratic | 3rd | January 3, 1965 – January 3, 1979 | Elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Re-elected in 1974. Re-elected in 1976. Retired. |
Cory Gardner | Republican | 4th | January 3, 2011 – January 3, 2015 | Elected in 2010. Re-elected in 2012. Retired to run for U.S. Senator. |
Dean M. Gillespie | Republican | 1st | March 7, 1944 – January 3, 1947 | Elected to finish Lewis's term. Re-elected in 1944. Lost re-election to Carroll. |
Warren A. Haggott | Republican | 2nd | March 4, 1907 – March 4, 1909 | Elected in 1906. Lost re-election to Martin. |
Guy U. Hardy | Republican | 3rd | March 4, 1919 – March 4, 1933 | Elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Lost re-election to Martin. |
Joel Hefley | Republican | 5th | January 3, 1987 – January 3, 2007 | Elected in 1986. Re-elected in 1988. Re-elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Retired. |
William S. Hill | Republican | 2nd | January 3, 1941 – January 3, 1959 | Elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Retired. |
Benjamin C. Hilliard | Democratic | 1st | March 4, 1915 – March 4, 1919 | Elected in 1914. Re-elected in 1916. Lost re-election to Vaile. |
Herschel M. Hogg | Republican | 2nd | March 4, 1903 – March 4, 1907 | Elected in 1902 Re-elected in 1904. Retired. |
Byron L. Johnson | Democratic | 2nd | January 3, 1959 – January 3, 1961 | Elected in 1958. Lost re-election to Dominick. |
Jim Johnson | Republican | 4th | January 3, 1973 – January 3, 1981 | Elected in 1972. Re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Retired. |
Edward Keating | Democratic | At-large | March 4, 1913 – March 4, 1915 | Elected in 1912. Redistricted to the 3rd district. |
3rd | March 4, 1915 – March 4, 1919 | Redistricted from the at-large district and re-elected in 1914. Re-elected in 1916. Lost re-election to Hardy. |
George John Kindel | Democratic | 1st | March 4, 1913 – March 4, 1915 | Elected in 1912. Retired to run for U.S. senator. |
Raymond P. Kogovsek | Democratic | 3rd | January 3, 1979 – January 3, 1985 | Elected in 1978. Re-elected in 1980. Re-elected in 1982. Retired. |
Ken Kramer | Republican | 5th | January 3, 1979 – January 3, 1987 | Elected in 1978. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Retired to run for U.S. senator. |
Doug Lamborn | Republican | 5th | January 3, 2007 – present | Elected in 2006. Re-elected in 2008. Re-elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. |
Lawrence Lewis | Democratic | 1st | March 4, 1933 – December 9, 1943 | Elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Re-elected in 1940. Re-elected in 1942. Died. |
Greg Lopez | Republican | 4th | June 25, 2024 – present | Elected to finish Buck's term |
Betsy Markey | Democratic | 4th | January 3, 2009 – January 3, 2011 | Elected in 2008. Lost re-election to Gardner. |
John H. Marsalis | Democratic | 3rd | January 3, 1949 – January 3, 1951 | Elected in 1948. Lost re-election to Chenoweth. |
John Andrew Martin | Democratic | 2nd | March 4, 1909 – March 4, 1913 | Elected in 1908. Re-elected in 1910. Retired. |
3rd | March 4, 1933 – December 23, 1939 | Elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Died. |
Scott McInnis | Republican | 3rd | January 3, 1993 – January 3, 2005 | Elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Retired. |
Mike McKevitt | Republican | 1st | January 3, 1971 – January 3, 1973 | Elected in 1970. Lost re-election to Schroeder. |
Roy H. McVicker | Democratic | 2nd | January 3, 1965 – January 3, 1967 | Elected in 1964. Lost re-election to Brotzman. |
Marilyn Musgrave | Republican | 4th | January 3, 2003 – January 3, 2009 | Elected in 2002. Re-elected in 2004. Re-elected in 2006. Lost re-election to Markey. |
Joe Neguse | Democratic | 2nd | January 3, 2019 – present | Elected in 2018. Re-elected in 2020. Re-elected in 2022. |
Thomas M. Patterson | Democratic | Territory | March 4, 1875 –August 1, 1876 | Elected in 1874. Colorado achieved statehood. |
At-large | December 13, 1877– March 4, 1879 | Won contested election. Retired. |
Lafe Pence | Populist | 1st | March 4, 1893 – March 4, 1895 | Elected in 1892. Lost re-election to Shafroth. |
Ed Perlmutter | Democratic | 7th | January 3, 2007 – January 3, 2023 | Elected in 2006. Re-elected in 2008. Re-elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Retired. |
Brittany Pettersen | Democratic | 7th | January 3, 2023 – present | Elected in 2022 |
Jared Polis | Democratic | 2nd | January 3, 2009 – January 3, 2019 | Elected in 2008. Re-elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Retired after being elected Governor of Colorado. |
Robert F. Rockwell | Republican | 4th | December 9, 1941 – January 3, 1949 | Elected to finish Taylor's term. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Lost re-election to Aspinall. |
Byron G. Rogers | Democratic | 1st | January 3, 1951 – January 3, 1971 | Elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Lost re-nomination to Craig S. Barnes. |
Atterson W. Rucker | Democratic | 1st | March 4, 1909 – March 4, 1913 | Elected in 1908. Re-elected in 1910. Lost renomination to Kindel. |
John Salazar | Democratic | 3rd | January 3, 2005 – January 3, 2011 | Elected in 2004. Re-elected in 2006. Re-elected in 2008. Lost re-election to Tipton. |
Daniel Schaefer | Republican | 6th | March 29, 1983 – January 3, 1999 | Elected to begin Jack Swigert's term, who died before taking office. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Retired. |
Bob Schaffer | Republican | 4th | January 3, 1997 – January 3, 2003 | Elected in 1996. Re-elected in 1998. Re-elected in 2000. Retired. |
Pat Schroeder | Democratic | 1st | January 3, 1973 – January 3, 1997 | Elected in 1972. Re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Re-elected in 1992. Re-elected in 1994. Retired. |
Harry H. Seldomridge | Democratic | 2nd | March 4, 1913 – March 4, 1915 | Elected in 1912. Lost re-election to Timberlake. |
John F. Shafroth | Republican | 1st | March 4, 1895 – March 4, 1897 | Elected in 1894. |
Silver Republican | March 4, 1897 – March 4, 1903 | Re-elected in 1896 as a Silver Republican. Re-elected in 1898. Re-elected in 1900. |
Democratic | March 4, 1903 – February 15, 1904 | Re-elected in 1902 as a Democrat. Resigned after declaring his conviction that his opponent was actually elected. |
David Skaggs | Democratic | 2nd | January 3, 1987 – January 3, 1999 | Elected in 1986. Re-elected in 1988. Re-elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Retired. |
Michael L. Strang | Republican | 3rd | January 3, 1985 – January 3, 1987 | Elected in 1984. Lost re-election to Campbell. |
George G. Symes | Republican | At-large | March 4, 1885 – March 4, 1889 | Elected in 1884. Re-elected in 1886. Retired. |
Tom Tancredo | Republican | 6th | January 3, 1999 – January 3, 2009 | Elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Retired. |
Edward T. Taylor | Democratic | At-large | March 4, 1909 – March 4, 1915 | Elected in 1908. Re-elected in 1910. Re-elected in 1912. Redistricted to the 4th district. |
4th | March 4, 1915 – September 3, 1941 | Redistricted from the at-large district and re-elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Re-elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Re-elected in 1940. Died. |
Charles B. Timberlake | Republican | 2nd | March 4, 1915 – March 4, 1933 | Elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Lost renomination to George H. Bradfield. |
Scott Tipton | Republican | 3rd | January 3, 2011 – January 3, 2021 | Elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Lost renomination to Boebert. |
Hosea Townsend | Republican | At-large | March 4, 1889 – March 4, 1893 | Elected in 1888. Re-elected in 1890. Redistricted to the 2nd district and lost renomination to Earl B. Coe. |
Mark Udall | Democratic | 2nd | January 3, 1999 – January 3, 2009 | Elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Retired after being elected to the U.S. Senate. |
William N. Vaile | Republican | 1st | March 4, 1919 – July 2, 1927 | Elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Died. |
S. Harrison White | Democratic | 1st | November 15, 1927 – March 4, 1929 | Elected to finish Vaile's term. Lost re-election to Eaton. |
Tim Wirth | Democratic | 2nd | January 3, 1975 – January 3, 1987 | Elected in 1974. Re-elected in 1976. Re-elected in 1978. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Retired to Run for U.S. senator. |