Founded in 1873, McCook County is one of 66 counties in the state of South Dakota. Historically, McCook County was formed from Hanson County. The city of Salem is the county seat. With FIPS code of 87, McCook County has a population of 5,695 and area of 575 square miles (1,489 km2).
List of all cities in McCook County, SD alphabetically
| City/Town | Postal Code | Area Code |
| Bridgewater, SD | 57319 | 605 |
| Canistota, SD | 57012 | 605 |
| Center, SD | 57058 | 605 |
| Dolton, SD | 57319 | 605 |
| Montrose, SD | 57048 | 605 |
| Ramsey, SD | 57048 | 605 |
| Rumpus Ridge, SD | 57012 | 605 |
| Salem, SD | 57058 | 605 |
| Silver Lake, SD | 57319 | 605 |
| Spencer, SD | 57374 | 605 |
| Stanley Corner, SD | 57319 | 605 |
| Unityville, SD | 57058 | 605 |