7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Weatherford | 1 | 11,994 | 12,066 | -0.12% | 1,566 | 7.66 | City |
| Clinton | 2 | 8,305 | 8,500 | -0.47% | 835 | 9.95 | City |
| Thomas | 3 | 1,128 | 1,150 | -0.35% | 982 | 1.15 | City |
| Arapaho | 4 | 654 | 668 | -0.46% | 936 | 0.70 | Town |
| Custer City | 5 | 369 | 366 | 0.27% | 608 | 0.61 | Town |
| Butler | 6 | 205 | 205 | 0% | 481 | 0.43 | Town |
| Butler | 7 | 182 | 268 | 2.25% | 65 | 2.80 | CDP |
Weatherford is the largest city in Custer County, with a population of 11,994.
Butler is the smallest city in Custer County.
There are 7 cities in Custer County, Oklahoma.