| Southborough, MA (Town) |
| Southbridge, MA (Town) |
| Southbrook, MN (Township) |
| Southbury, CT (Town) |
| Southeast, IN (Township) |
| Southeast, NY (Town) |
| Southeast Fairbanks Borough, AK (County) |
| Southern Grove Community Development District No. 1, FL (CDD) |
| Southern Grove Community Development District No. 2, FL (CDD) |
| Southern Grove Community Development District No. 3, FL (CDD) |
| Southern Grove Community Development District No. 4, FL (CDD) |
| Southern Grove Community Development District No. 5, FL (CDD) |
| Southern Grove Community Development District No. 6, FL (CDD) |
| Southern Hills Plantation I Community Development District, FL (CDD) |
| Southern Hills Plantation II Community Development District, FL (CDD) |
