5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Potosi | 1 | 5,135 | 3,928 | 2.86% | 280 | 18 | CDP |
| Clyde | 2 | 4,108 | 3,820 | 1.41% | 1,251 | 3 | City |
| Baird | 3 | 1,561 | 1,479 | 1.04% | 588 | 3 | City |
| Cross Plains | 4 | 959 | 906 | 1.05% | 799 | 1 | Town |
| Putnam | 5 | 78 | 71 | 1.3% | 77 | 1 | Town |
Potosi is the largest city in Callahan County, with a population of 5,135.
Putnam is the smallest city in Callahan County, with a population of 78.
There are 5 cities in Callahan County, Texas.