Fort Collins is a home rule municipality in Larimer County, Colorado, United States, and its county seat. The population was 169,810 at the 2020 census, an increase of 17.94% since 2010. Fort Collins is the fourth-most populous city in Colorado. It is the principal city of the Fort Collins metropolitan statistical area, which had 359,066 residents in 2020, and is a major city of the Front Range Urban Corridor.
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