| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sweetwater | 1 | 10,030 | 10,607 | -1.09% | 920 | 11 | City |
| Roscoe | 2 | 1,194 | 1,264 | -1.16% | 370 | 3 | City |
| Blackwell | 3 | 249 | 260 | -0.8% | 421 | 1 | City |
Sweetwater is the largest city in Nolan County, with a population of 10,030.
Blackwell is the smallest city in Nolan County, with a population of 249.
There are 3 cities in Nolan County, Texas.