Colorado Population 2024 Estimate By County. For the most recent data available, please refer to the vintage. The most populous county in colorado in 2019 is denver county, home of denver, with a population of 704,621.
The census bureau’s population estimates program (pep) produces estimates of the population for the united states, states, metropolitan and micropolitan statistical areas, counties, cities, towns, as well as for puerto. Access the sdo county population and housing lookup for information on county.