| South Wheatland Township, IL (Township) |
| South Whitehall, PA (Township) |
| South Whitley, IN (Town) |
| South Williamsport, PA (Borough) |
| South Wilmington, IL (Village) |
| South Windsor, CT (Town) |
| South Woodbury, PA (Township) |
| South Zanesville, OH (Village) |
| Southampton, PA (Township) |
| Southampton, PA (Township) |
| Southampton, PA (Township) |
| Southampton, PA (Township) |
| Southampton, MA (Town) |
| Southampton, NY (Town) |
| Southampton, NY (Village) |
