Towns
| State | City/Town | Town Title |
|---|---|---|
| South Dakota | Stickney | Stickney, SD |
| South Dakota | Stockholm | Stockholm, SD |
| South Dakota | Strandburg | Strandburg, SD |
| South Dakota | Stratford | Stratford, SD |
| South Dakota | Sturgis | Sturgis, SD |
| South Dakota | Summit | Summit, SD |
| South Dakota | Tabor | Tabor, SD |
| South Dakota | Tea | Tea, SD |
| South Dakota | Timber Lake | Timber Lake, SD |
| South Dakota | Tolstoy | Tolstoy, SD |
| South Dakota | Toronto | Toronto, SD |
| South Dakota | Trail City | Trail City, SD |
| South Dakota | Trent | Trent, SD |
| South Dakota | Tripp | Tripp, SD |
| South Dakota | Tulare | Tulare, SD |
| South Dakota | Turton | Turton, SD |
| South Dakota | Tuthill | Tuthill, SD |
| South Dakota | Twin Brooks | Twin Brooks, SD |
| South Dakota | Tyndall | Tyndall, SD |
| South Dakota | Union Center | Union Center, SD |
| South Dakota | Utica | Utica, SD |
| South Dakota | Vale | Vale, SD |
| South Dakota | Valley Springs | Valley Springs, SD |
| South Dakota | Veblen | Veblen, SD |
| South Dakota | Vermillion | Vermillion, SD |