Founded in 1875, Custer County is one of 66 counties in the state of South Dakota. Historically, Custer County was formed from Indian lands. The city of Custer is the county seat. With FIPS code of 33, Custer County has a population of 8,609 and area of 1,558 square miles (4,035 km2).
List of all cities in Custer County, SD alphabetically
| City/Town | Postal Code | Area Code |
| Bakerville, SD | 57730 | 605 |
| Bluebell, SD | 57730 | 605 |
| Buffalo Gap, SD | 57722 | 605 |
| Crazy Horse, SD | 57730 | 605 |
| Custer, SD | 57730 | 605 |
| Fairburn, SD | 57738 | 605 |
| Fleming, SD | 57738 | 605 |
| Folsom, SD | 57744 | 605 |
| Game Lodge, SD | 57730 | 605 |
| Harney Peak, SD | 57730 | 605 |
| Hayward, SD | 57744 | 605 |
| Hermosa, SD | 57744 | 605 |
| Pringle, SD | 57773 | 605 |
| Red Shirt, SD | 57744 | 605 |
| Sanator, SD | 57730 | 605 |
| Sylvan Lake, SD | 57730 | 605 |