| Sullivan Township, IL (Township) |
| Sullivan Township, IL (Township) |
| Sullivan'S Island, SC (Town) |
| Sully, IA (City) |
| Sully County, SD (County) |
| Sulphur, LA (City) |
| Sulphur, OK (City) |
| Sulphur Rock, AR (Town) |
| Sulphur Springs, AR (City) |
| Sulphur Springs, IN (Town) |
| Sulphur Springs, TX (City) |
| Sultan, WA (City) |
| Sumas, WA (City) |
| Sumiton, AL (City) |
| Summer Woods Community Development District, FL (CDD) |
