The largest city in Colorado is Denver, with a population of 699,288. Keenesburg is the fastest growing city in Colorado over the past 10 years, having grown 160.16% since 2010.


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10 Largest Cities in Colorado

Cities in Colorado by Population (2023)

Colorado is the 21st most populous state in the U.S. with a population that exceeds 5.6 million spread among its many cities. The state’s most populous city is Denver, which has a population of over 682,000 people. Denver is also Colorado’s capital. There are no other cities that have populations that exceed 500,000. However, Colorado Springs is quickly approaching that milestone, with a population count of over 450,000. A total of twelve cities have populations that exceed 100,000, while 34 have population counts between 10,000 and 100,000.

In all, there are 271 incorporated municipalities in Colorado. There are 196 towns and 73 cities. The municipalities are governed under one of five different structures. This includes consolidated city and county, home rule municipality, statutory city, statutory town, and territorial charter municipality. The laws of the state make only a few distinctions between cities and towns. As a general rule, the cities are more populated than towns, although there are some exceptions. Colorado has multiple towns with populations that fall below 100 residents. The smallest as of 2014 data was the statutory town of Lakeside, which had a population of just eight people.

Map of Cities in Colorado

Colorado Cities by First Letter