5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Potosi | 1 | 5,135 | 3,928 | 2.86% | 280 | 18.35 | CDP |
| Clyde | 2 | 4,095 | 3,820 | 1.36% | 1,247 | 3.28 | City |
| Baird | 3 | 1,558 | 1,478 | 1.04% | 586 | 2.66 | City |
| Cross Plains | 4 | 955 | 904 | 1.06% | 796 | 1.20 | Town |
| Putnam | 5 | 70 | 64 | 1.45% | 69 | 1.01 | Town |
Potosi is the largest city in Callahan County, with a population of 5,135.
Putnam is the smallest city in Callahan County.
There are 5 cities in Callahan County, Texas.