| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cañon City | 1 | 17,081 | 16,918 | 0.3% | 1,376 | 12 | City |
| Florence | 2 | 3,862 | 3,834 | 0.16% | 859 | 4 | City |
| Williamsburg | 3 | 802 | 733 | 1.65% | 227 | 4 | Town |
| Rockvale | 4 | 534 | 515 | 0.75% | 260 | 2 | Town |
| Coal Creek | 5 | 361 | 363 | 0% | 302 | 1 | Town |
| Brookside | 6 | 236 | 233 | 0.43% | 498 | 0 | Town |
Cañon City is the largest city in Fremont County, with a population of 17,081.
Brookside is the smallest city in Fremont County, with a population of 236.
There are 6 cities in Fremont County, Colorado.