This is a population history of the 272 active incorporated municipalities of the U.S. State of Colorado since the 2000 United States Census as estimated by the United States Census Bureau. With a 2021 population estimate of 711,463 residents, the City and County of Denver remains the most populous municipality in Colorado, while the Town of Carbonate still has no year-round residents. Colorado now has 13 municipalities with more than 100,000 residents, and 17 with fewer than 100 residents. The following table will be expanded as additional censuses are taken.