6 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 |
| Florence | 2 | 3,892 | 3,844 | 0.23% | 866 | 4 | City |
| Williamsburg | 3 | 794 | 731 | 1.53% | 225 | 4 | Town |
| Rockvale | 4 | 538 | 513 | 0.94% | 262 | 2 | Town |
| Coal Creek | 5 | 369 | 363 | 0.27% | 309 | 1 | Town |
| Brookside | 6 | 242 | 236 | 0.41% | 511 | 0 | Town |
Cañon City is the largest city in Fremont County, with a population of 17,255.
Brookside is the smallest city in Fremont County, with a population of 242.
There are 6 cities in Fremont County, Colorado.