| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Collins | 1 | 171,693 | 169,954 | 0.11% | 3,000 | 57 | City |
| Loveland | 2 | 82,545 | 76,344 | 1.42% | 2,283 | 36 | City |
| Berthoud | 3 | 14,837 | 10,601 | 5.38% | 1,142 | 13 | Town |
| Timnath | 4 | 12,617 | 6,756 | 8.77% | 1,608 | 8 | Town |
| Wellington | 5 | 12,405 | 11,167 | 1.94% | 2,832 | 4 | Town |
| Estes Park | 6 | 5,752 | 5,904 | -0.48% | 859 | 7 | Town |
Fort Collins is the largest city in Larimer County, with a population of 171,693.
Estes Park is the smallest city in Larimer County, with a population of 5,752.
There are 6 cities in Larimer County, Colorado.