13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cañon City | 1 | 17,438 | 16,945 | 0.57% | 1,405 | 12.41 | City |
| Lincoln Park | 2 | 4,630 | 3,559 | 1.58% | 1,223 | 3.79 | CDP |
| Penrose | 3 | 3,980 | 3,185 | 0.68% | 223 | 17.85 | CDP |
| Florence | 4 | 3,876 | 3,841 | 0.18% | 862 | 4.49 | City |
| Park Center | 5 | 2,984 | 2,397 | 7.14% | 456 | 6.55 | CDP |
| Coal Creek | 6 | 2,439 | 2,605 | 0.12% | 260 | 9.39 | CDP |
| Howard | 7 | 1,039 | 769 | 2.06% | 62 | 16.74 | CDP |
| Williamsburg | 8 | 787 | 731 | 1.42% | 223 | 3.53 | Town |
| Rockvale | 9 | 546 | 513 | 1.3% | 266 | 2.05 | Town |
| Coaldale | 10 | 410 | 462 | 2.5% | 13 | 31.05 | CDP |
| Coal Creek | 11 | 371 | 360 | 0.54% | 311 | 1.19 | Town |
| Brookside | 12 | 247 | 236 | 0.82% | 521 | 0.47 | Town |
| Cotopaxi | 13 | 22 | 34 | 4.76% | 76 | 0.29 | CDP |
Cañon City is the largest city in Fremont County, with a population of 17,438.
Cotopaxi is the smallest city in Fremont County.
There are 13 cities in Fremont County, Colorado.