Fort Collins
- County:
- Larimer County
- County Seat:
- Yes
- Area (mi²):
- 57.234
- State:
- Colorado
Fort Collins is a city located in Larimer County, Colorado. Fort Collins has a 2026 population of 170,924. It is also the county seat of Larimer County. Fort Collins is currently growing at a rate of 0.11% annually and its population has increased by 0.55% since the most recent census, which recorded a population of 169,990 in 2020.