Founded in 1862, Brookings County is one of 66 counties in the state of South Dakota. Historically, Brookings County was formed from unorganized territory. The city of Brookings is the county seat. With FIPS code of 11, Brookings County has a population of 34,639 and area of 794 square miles (2,056 km2).
List of all cities in Brookings County, SD alphabetically
| City/Town | Postal Code | Area Code |
| Aurora, SD | 57002 | 605 |
| Brookings, SD | 57006 | 605 |
| 57007 | 605 | |
| Bruce, SD | 57220 | 605 |
| Bushnell, SD | 57276 | 605 |
| Elkton, SD | 57026 | 605 |
| Lake Campbell, SD | 57006 | 605 |
| Lake Sinai, SD | 57061 | 605 |
| Oakwood Lake, SD | 57220 | 605 |
| Roland Colony, SD | 57276 | 605 |
| Sd State University, SD | 57007 | 605 |
| Sinai, SD | 57061 | 605 |
| Volga, SD | 57071 | 605 |
| Ward, SD | 57026 | 605 |
| White, SD | 57276 | 605 |