8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Collins | 1 | 170,638 | 169,982 | 0.08% | 2,981 | 57.23 | City |
| Loveland | 2 | 81,342 | 76,366 | 1.24% | 2,296 | 35.42 | City |
| Berthoud | 3 | 14,988 | 10,613 | 6.2% | 1,153 | 13 | Town |
| Wellington | 4 | 12,696 | 11,151 | 2.5% | 3,308 | 3.84 | Town |
| Timnath | 5 | 12,158 | 6,740 | 9.79% | 1,664 | 7.31 | Town |
| Estes Park | 6 | 5,773 | 5,900 | -0.43% | 862 | 6.70 | Town |
| Laporte | 7 | 2,179 | 2,299 | -0.82% | 356 | 6.12 | CDP |
| Red Feather Lakes | 8 | 449 | 591 | 1.58% | 49 | 9.12 | CDP |
Fort Collins is the largest city in Larimer County, with a population of 170,638.
Red Feather Lakes is the smallest city in Larimer County.
There are 8 cities in Larimer County, Colorado.