| South Prairie, WA (Town) |
| South Pymatuning, PA (Township) |
| South Randall, KS (Township) |
| South Range, MI (Village) |
| South Red River, MN (Township) |
| South Renovo, PA (Borough) |
| South River, NJ (Borough) |
| South Rock Island Township, IL (Township) |
| South Rockwood, MI (Village) |
| South Roscoe, KS (Township) |
| South Ross Township, IL (Township) |
| South Roxana, IL (Village) |
| South Russell, OH (Village) |
| South Salem, OH (Village) |
| South Salem, KS (Township) |
