Founded in 1891, Custer County is one of 77 counties in the state of Oklahoma. Historically, Custer County was formed from Cheyenne-Arapaho Reservation. The city of Arapaho is the county seat. With FIPS code of 39, Custer County has a population of 28,163 and area of 987 square miles (2,556 km2).
List of all cities in Custer County, OK alphabetically
| City/Town | Postal Code | Area Code |
| Arapaho, OK | 73620 | 580 |
| Butler, OK | 73625 | 580 |
| Clinton, OK | 73601 | 580 |
| Custer, OK | 73639 | 580 |
| Custer City, OK | 73639 | 580 |
| Thomas, OK | 73669 | 580 |
| Weatherford, OK | 73096 | 580 |