6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Collins | 1 | 171,391 | 169,990 | 0.14% | 2,995 | 57 | City |
| Loveland | 2 | 83,465 | 76,375 | 1.44% | 2,309 | 36 | City |
| Berthoud | 3 | 15,166 | 10,611 | 5.27% | 1,167 | 13 | Town |
| Timnath | 4 | 12,899 | 6,745 | 8.64% | 1,644 | 8 | Town |
| Wellington | 5 | 12,578 | 11,144 | 1.94% | 2,871 | 4 | Town |
| Estes Park | 6 | 5,741 | 5,902 | -0.47% | 858 | 7 | Town |
Fort Collins is the largest city in Larimer County, with a population of 171,391.
Estes Park is the smallest city in Larimer County, with a population of 5,741.
There are 6 cities in Larimer County, Colorado.