Population totals for Colorado, counties & places, 1870 to 2010 are available here.
Population estimates are produced annually by the State Demography Office. The most recent estimate available is for the year of 2017 and was finalized in August 2018.
User Lookup: This option allows the user to select any combination of counties or municipalities for the years 2010 to current.
Population forecasts are not available for municipalities. Forecasts are available for counties and sub-state regions only.