# List of Colorado legislatures

This is a list of the legislatures of the U.S. state of Colorado. The Legislative Assembly of the Territory of Colorado met from the creation of the territory in 1861 until statehood on August 1, 1876. The General Assembly of the State of Colorado has convened many times since statehood.

## Legislative Assembly of the Territory of Colorado

The Legislative Assembly of the Territory of Colorado did not number its legislatures; rather, it numbered its sessions, which occurred occasionally from 1861 to 1876.
| Session | Location(s) | Session began | Session ended | House journal link |
| First Regular Session | Denver | September 9, 1861 (1861-09-09) | November 7, 1861 (1861-11-07) | |
| Second Session | Colorado City Denver | July 7, 1862 (1862-07-07) | August 15, 1862 (1862-08-15) | |
| Third Session | Golden City Denver | February 1, 1864 (1864-02-01) | March 11, 1864 (1864-03-11) | |
| Fourth Session | Golden City | January 2, 1865 (1865-01-02) | February 10, 1865 (1865-02-10) | |
| Fifth Session | Golden City Denver | January 1, 1866 (1866-01-01) | February 9, 1866 (1866-02-09) | |
| Sixth Session | Golden City | December 3, 1866 (1866-12-03) | January 11, 1867 (1867-01-11) | |
| Seventh Session | Golden City Denver | December 2, 1867 (1867-12-02) | January 10, 1868 (1868-01-10) | |
| Eighth Session | Denver | January 3, 1870 (1870-01-03) | February 11, 1870 (1870-02-11) | |
| Ninth Session | Denver | January 1, 1872 (1872-01-01) | February 9, 1872 (1872-02-09) | |
| Tenth Session | Denver | January 5, 1874 (1874-01-05) | February 13, 1874 (1874-02-13) | (not available) |
| Eleventh Session | Denver | January 3, 1876 (1876-01-03) | February 11, 1876 (1876-02-11) | |

### 1865 Territorial Legislature

For a brief time in 1865, Colorado had an approved state constitution, and selected a legislature and other elected officials. The legislature briefly convened, believing that their statehood had been approved. However, Andrew Johnson vetoed the corresponding enabling act, and the body that met as the state legislature was disbanded. This legislature met from December 12 through December 19, 1865.

## General Assembly of the State of Colorado

The state legislature has met in Denver, Colorado since its founding. "The first legislative session met from November 1, 1876, through March 20, 1877, and the succeeding sessions met every two years in the odd numbered years: 1879, 1881, 1883, etc., until 1950."
"Colorado general elections are held on the first Tuesday, following the first Monday in November in every even-numbered year, with the exception of the first election in October 1876. Since 1876, representatives have been elected every two years and senators have been elected every four years on a staggered basis."
| General Assembly | Session | Session began | Session ended | Senate journal link | Last election |
| 1st [Wikidata] | 1st [Wikidata] | November 1, 1876 (1876-11-01) | March 20, 1877 (1877-03-20) | | October 1876 |
| 2nd [Wikidata] | 2nd [Wikidata] | January 1, 1879 (1879-01-01) | February 9, 1879 (1879-02-09) | | November 1878 |
| 3rd [Wikidata] | 3rd [Wikidata] | January 5, 1881 (1881-01-05) | February 13, 1881 (1881-02-13) | | November 1880 |
| 4th [Wikidata] | Regular session | January 3, 1883 (1883-01-03) | February 11, 1883 (1883-02-11) | | November 1882 |
| 4th [Wikidata] | Joint session | January 17, 1883 (1883-01-17) | February 27, 1883 (1883-02-27) | (N/A) | |
| 5th [Wikidata] | 5th [Wikidata] | January 7, 1885 (1885-01-07) | April 6, 1885 (1885-04-06) | | November 1884 |
| 6th [Wikidata] | 6th [Wikidata] | January 5, 1887 (1887-01-05) | April 4, 1887 (1887-04-04) | | November 1886 |
| 7th [Wikidata] | | 1889 | | | November 1888 |
| 8th [Wikidata] | | 1891 | | | November 1890 |
| 9th [Wikidata] | | 1893 | | | November 1892 |
| 10th [Wikidata] | | 1895 | | | November 1894 |
| 11th [Wikidata] | | 1897 | | | November 1896 |
| 12th [Wikidata] | | 1899 | | | November 1898 |
| 13th [Wikidata] | | 1901 | | | November 1900 |
| 14th [Wikidata] | | 1903 | | | November 1902 |
| 15th [Wikidata] | | 1905 | | | November 1904 |
| 16th [Wikidata] | | 1907 | | | November 1906 |
| 17th [Wikidata] | | 1909 | | | November 1908 |
| 18th [Wikidata] | | 1911 | | | November 1910 |
| 19th [Wikidata] | | 1913 | | | November 1912 |
| 20th [Wikidata] | | 1915 | | | November 1914 |
| 21st [Wikidata] | | 1917 | | | November 1916 |
| 22nd [Wikidata] | | 1919 | | | November 1918 |
| 23rd [Wikidata] | | 1921 | | | November 1920 |
| 24th [Wikidata] | | 1923 | | | November 1922 |
| 25th [Wikidata] | | 1925 | | | November 1924 |
| 26th [Wikidata] | | 1927 | | | November 1926 |
| 27th [Wikidata] | | 1929 | | | November 1928 |
| 28th [Wikidata] | | 1931 | | | November 1930 |
| 29th [Wikidata] | | 1933 | | | November 1932 |
| 30th [Wikidata] | | 1935 | | | November 1934 |
| 31st [Wikidata] | | 1937 | | | November 1936 |
| 32nd [Wikidata] | | 1939 | | | November 1938 |
| 33rd [Wikidata] | | 1941 | | | November 1940 |
| 34th [Wikidata] | | 1942 | | | |
| 35th [Wikidata] | | 1944 | | | November 1942 |
| 36th [Wikidata] | | 1947 | | | November 1946 |
| 37th [Wikidata] | | 1949 | | | November 1948 |
| 38th [Wikidata] | | 1951 | | | November 1950 |
| 39th [Wikidata] | | 1953 | | | November 1952 |
| 40th [Wikidata] | | 1955 | | | November 1954 |
| 41st [Wikidata] | | 1957 | | | November 1956 |
| 42nd [Wikidata] | | 1959 | | | November 1958 |
| 43rd [Wikidata] | | 1961 | | | November 1960 |
| 44th [Wikidata] | | 1963 | | | November 1962 |
| 45th [Wikidata] | | 1965 | | | November 1964 |
| 46th [Wikidata] | | 1967 | | | November 1966 |
| 47th [Wikidata] | | 1969 | | | November 1968 |
| 48th [Wikidata] | | 1971 | | | November 1970 |
| 49th [Wikidata] | | 1973 | | | November 1972 |
| 50th [Wikidata] | | 1975 | | | November 1974 |
| 51st [Wikidata] | | 1977 | | | November 1976 |
| 52nd [Wikidata] | | 1979 | | | November 1978 |
| 53rd [Wikidata] | | 1981 | | | November 1980 |
| 54th [Wikidata] | | 1983 | | | November 1982 |
| 55th [Wikidata] | | 1985 | | | November 1984 |
| 56th [Wikidata] | | 1987 | | | November 1986 |
| 57th [Wikidata] | | 1989 | | | November 1988 |
| 58th [Wikidata] | | 1991 | | | November 1990 |
| 59th [Wikidata] | | 1993 | | | November 1992 |
| 60th [Wikidata] | | 1995 | | | November 1994 |
| 61st [Wikidata] | | 1997 | | | November 1996 |
| 62nd [Wikidata] | | 1999 | | | November 1998 |
| 63rd [Wikidata] | | 2001 | | | November 2000 |
| 64th [Wikidata] | | 2003 | | | November 2002 |
| 65th [Wikidata] | | 2005 | | | November 2004 |
| 66th [Wikidata] | | 2007 | | | November 2006 |
| 67th [Wikidata] | First Regular Session | January 7, 2009 (2009-01-07) | May 6, 2009 (2009-05-06) | | November 2008 |
| 67th [Wikidata] | Second Regular Session | January 13, 2010 (2010-01-13) | May 12, 2010 (2010-05-12) | | |
| 68th | First Regular Session | January 12, 2011 (2011-01-12) | May 11, 2011 (2011-05-11) | | November 2010 |
| 68th | Second Regular Session | January 11, 2012 (2012-01-11) | May 9, 2012 (2012-05-09) | | |
| 68th | First Extraordinary Session | May 14, 2012 (2012-05-14) | May 16, 2012 (2012-05-16) | | |
| 69th [Wikidata] | First Regular Session | January 9, 2013 (2013-01-09) | May 8, 2013 (2013-05-08) | | November 2012 |
| 69th [Wikidata] | Second Regular Session | January 8, 2014 (2014-01-08) | May 7, 2014 (2014-05-07) | | |
| 70th [Wikidata] | First Regular Session | January 7, 2015 (2015-01-07) | May 6, 2015 (2015-05-06) | | November 2014: Senate |
| 70th [Wikidata] | Second Regular Session | January 13, 2016 (2016-01-13) | May 11, 2016 (2016-05-11) | | |
| 71st [Wikidata] | First Regular Session | January 11, 2017 (2017-01-11) | May 10, 2017 (2017-05-10) | | November 2016: House, Senate |
| 71st [Wikidata] | First Extraordinary Session | October 2, 2017 (2017-10-02) | October 3, 2017 (2017-10-03) | (None found) | |
| 71st [Wikidata] | Second Regular Session | January 10, 2018 (2018-01-10) | May 9, 2018 (2018-05-09) | | |
| 72nd [Wikidata] | First Regular Session | January 4, 2019 (2019-01-04) | May 3, 2019 (2019-05-03) | | November 2018: House, Senate |
| 72nd [Wikidata] | Second Regular Session | January 8, 2020 (2020-01-08) | June 15, 2020 (2020-06-15) | | |
| 72nd [Wikidata] | First Extraordinary Session | November 30, 2020 (2020-11-30) | December 2, 2020 (2020-12-02) | | |
| 73rd [Wikidata] | | 2021 | | | November 2020: House, Senate |
| 74th | | 2023 | | | November 2022: House, Senate |
| 75th | | 2025 | | | November 2024: House, Senate |