The Territory of Colorado was represented by one non-voting delegate at-large to the United States House of Representatives from its organization in 1861, until statehood in 1876.

Delegate	Party	Years	Cong ress	Electoral history
District created August 19, 1861
Hiram Pitt Bennet (Denver)	Conservative Republican	August 19, 1861 – March 3, 1865	37th 38th	Elected in 1861. Re-elected in 1862. Retired.
Allen Alexander Bradford (Denver)	Republican	March 4, 1865 – March 3, 1867	39th	Elected in 1864. Retired.
George Miles Chilcott (Excelsior)	Independent Republican	March 4, 1867 – March 3, 1869	40th	Elected in 1866. Retired.
Allen Alexander Bradford (Pueblo)	Republican	March 4, 1869 – March 3, 1871	41st	Elected in 1868. Retired.
Jerome Bunty Chaffee (Denver)	Republican	March 4, 1871 – March 3, 1875	42nd 43rd	Elected in 1870. Re-elected in 1872. Retired.
Thomas MacDonald Patterson (Denver)	Democratic	March 4, 1875 – August 1, 1876	44th	Elected in 1874. Ran for member from Colorado.
District eliminated August 1, 1876 upon Colorado's admission to the Union.

Upon admission to the Union in 1876, the State of Colorado was entitled to full representation in the United States Congress. See United States congressional delegations from Colorado and Colorado's congressional districts.

• List of United States representatives from Colorado
• List of United States senators from Colorado
• United States congressional delegations from Colorado

• "Biographical Directory of the U.S. Congress - Retro Search". bioguideretro.congress.gov. Retrieved May 18, 2020.
• "Our Campaigns - Container Detail Page". www.ourcampaigns.com. Retrieved May 18, 2020.

39°00′N 105°30′W / 39°N 105.5°W / 39; -105.5