20 Largest Colorado Cities by Population

Whether you’re a prospective resident of the Centennial State or just curious about its largest cities, it’s always nice to have a list to skim. Here’s just that, a look at twenty of the most populated towns in Colorado. Colorado has an estimated population of 6,036,620 in 2026. (5.69 million in the 2020 census). More than half of whom live in the following largest cities. Data came from the United States Census directly for 2010 and 2020, and the 2026 data is only an estimate from World Population Review. Many of the included cities are suburbs of the greater Denver area, but there are plenty of standalone towns on the list, too. Some cities are declining in population, while others are still growing. Almost all of the cities are located east of the Rockies from Fort Collins south to Pueblo, along the Front Range Urban Corridor; but one Western Slope city managed to sneak in near the bottom.

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