| South Salt Lake, UT (City) |
| South San Francisco, CA (City) |
| South Seward, KS (Township) |
| South Sharps Creek, KS (Township) |
| South Shenango, PA (Township) |
| South Shore, SD (Town) |
| South Shore, KY (City) |
| South Shore Corporate Park Industrial Community Development District, FL (CDD) |
| South Sioux City, NE (City) |
| South Solon, OH (Village) |
| South St Paul, MN (City) |
| South Strabane, PA (Township) |
| South Thomaston, ME (Town) |
| South Toms River, NJ (Borough) |
| South Township, IA (Township) |
