List of municipalities in Colorado
list of municipalities in the U.S. State of Colorado
The U.S. State of Colorado has 272 active municipalities, comprising 197 towns, 73 cities, and two consolidated city and county governments. The City and County of Denver, the state capital, is the oldest municipality in Colorado. On December 3, 1859, the extralegal Territory of Jefferson granted a charter to the consolidated City of Denver, Auraria, and Highland. The Town of Keystone, incorporated on April 3, 2023, is the newest Colorado municipality. On July 28, 2026, the Colorado Secretary of State declared that the Town of Hartman had been abandoned after all the town trustees had resigned.
Colorado municipalities range in population from the City and County of Denver with a 2020 population of 715,522, to the Town of Carbonate, which has had no year-round population since the 1890 Census due to its severe winter weather and difficult access. The City of Black Hawk with a 2020 population of 127 is the least populous Colorado city, while the Town of Castle Rock with a 2020 population of 73,158 is the most populous Colorado town.
At the 2020 United States Census, 4,299,942 of the 5,773,714 Colorado residents (74.47%) lived in one of the 271 municipalities active at the time. Another 714,417 residents (12.37%) lived in one of the 210 census-designated places, while the remaining 759,355 residents (13.15%) lived in the many rural and mountainous areas of the state.
In 2020, only 1,968 square miles (5,097 km2) of Colorado's 103,642 square miles (268,431 km2) of land area (1.90%) were incorporated in the 271 active municipalities.
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