Founded in 1883, Butte County is one of 66 counties in the state of South Dakota. Historically, Butte County was formed from Harding County. The city of Belle Fourche is the county seat. With FIPS code of 19, Butte County has a population of 10,456 and area of 2,249 square miles (5,825 km2).
List of all cities in Butte County, SD alphabetically
| City/Town | Postal Code | Area Code |
| Arpan, SD | 57762 | 605 |
| Belle Fourche, SD | 57717 | 605 |
| Castle Rock, SD | 57760 | 605 |
| Cedar Canyon, SD | 57760 | 605 |
| Fruitdale, SD | 57717 | 605 |
| Gill, SD | 57760 | 605 |
| Hoover, SD | 57760 | 605 |
| Mason, SD | 57717 | 605 |
| Newell, SD | 57760 | 605 |
| Nisland, SD | 57762 | 605 |
| Vale, SD | 57788 | 605 |
| Willet, SD | 57717 | 605 |