Founded in 1883, Sanborn County is one of 66 counties in the state of South Dakota. Historically, Sanborn County was formed from Miner County. The city of Woonsocket is the county seat. With FIPS code of 111, Sanborn County has a population of 2,378 and area of 569 square miles (1,474 km2).
List of all cities in Sanborn County, SD alphabetically
| City/Town | Postal Code | Area Code |
| Artesian, SD | 57314 | 605 |
| Forestburg, SD | 57314 | 605 |
| Letcher, SD | 57359 | 605 |
| Storla, SD | 57359 | 605 |
| Woonsocket, SD | 57385 | 605 |