6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sweetwater | 1 | 10,092 | 10,623 | -1.02% | 912 | 11 | City |
| Sweetwater | 2 | 10,092 | 10,611 | -1.02% | 912 | 11 | City |
| Roscoe | 3 | 1,195 | 1,263 | -1.16% | 371 | 3 | City |
| Roscoe | 4 | 1,195 | 1,262 | -1.16% | 371 | 3 | City |
| Blackwell | 5 | 248 | 258 | -0.8% | 420 | 1 | City |
| Blackwell | 6 | 248 | 258 | -0.8% | 420 | 1 | City |
Sweetwater is the largest city in Nolan County, with a population of 10,092.
Blackwell is the smallest city in Nolan County, with a population of 248.
There are 6 cities in Nolan County, Texas.