| Sweetwater Creek Community Development District, FL (CDD) |
| Sweetwater Township, MI (Township) |
| Swenoda, MN (Township) |
| Swepsonville, NC (Town) |
| SWI Community Development District, FL (CDD) |
| Swift County, MN (County) |
| Swifton, AR (City) |
| Swink, CO (Town) |
| Swisher, IA (City) |
| Swisher County, TX (County) |
| Swiss, WI (Town) |
| Swissvale, PA (Borough) |
| Switz City, IN (Town) |
| Switzerland County, IN (County) |
| Switzerland Township, OH (Township) |
