13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cañon City | 1 | 17,255 | 16,942 | 0.36% | 1,390 | 12 | City |
| Lincoln Park | 2 | 4,630 | 3,559 | 1.58% | 1,223 | 4 | CDP |
| Penrose | 3 | 3,980 | 3,185 | 0.68% | 223 | 18 | CDP |
| Florence | 4 | 3,892 | 3,844 | 0.23% | 866 | 4 | City |
| Park Center | 5 | 2,984 | 2,397 | 7.15% | 456 | 7 | CDP |
| Coal Creek | 6 | 2,439 | 2,605 | 0.12% | 260 | 9 | CDP |
| Howard | 7 | 1,039 | 769 | 2.06% | 62 | 17 | CDP |
| Williamsburg | 8 | 794 | 731 | 1.53% | 225 | 4 | Town |
| Rockvale | 9 | 538 | 513 | 0.94% | 262 | 2 | Town |
| Coaldale | 10 | 410 | 462 | 2.5% | 13 | 31 | CDP |
| Coal Creek | 11 | 369 | 363 | 0.27% | 309 | 1 | Town |
| Brookside | 12 | 242 | 236 | 0.41% | 511 | 0 | Town |
| Cotopaxi | 13 | 22 | 34 | 4.76% | 76 | 0 | CDP |
Cañon City is the largest city in Fremont County, with a population of 17,255.
Cotopaxi is the smallest city in Fremont County, with a population of 22.
There are 13 cities in Fremont County, Colorado.