2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Goldthwaite | 1 | 1,787 | 1,726 | 0.56% | 885 | 2 | City |
| Mullin | 2 | 128 | 128 | 0% | 274 | 0 | Town |
Goldthwaite is the largest city in Mills County, with a population of 1,787.
Mullin is the smallest city in Mills County, with a population of 128.
There are 2 cities in Mills County, Texas.