Towns
| State | City/Town | Town Title |
|---|---|---|
| Pennsylvania | Sterling | Sterling, PA |
| Pennsylvania | Stevens | Stevens, PA |
| Pennsylvania | Stevensville | Stevensville, PA |
| Pennsylvania | Stewartstown | Stewartstown, PA |
| Pennsylvania | Stillwater | Stillwater, PA |
| Pennsylvania | Stockdale | Stockdale, PA |
| Pennsylvania | Stockertown | Stockertown, PA |
| Pennsylvania | Stoneboro | Stoneboro, PA |
| Pennsylvania | Stoystown | Stoystown, PA |
| Pennsylvania | Strabane | Strabane, PA |
| Pennsylvania | Strasburg | Strasburg, PA |
| Pennsylvania | Strattanville | Strattanville, PA |
| Pennsylvania | Strausstown | Strausstown, PA |
| Pennsylvania | Strongstown | Strongstown, PA |
| Pennsylvania | Stroudsburg | Stroudsburg, PA |
| Pennsylvania | Stump Creek | Stump Creek, PA |
| Pennsylvania | Sturgeon | Sturgeon, PA |
| Pennsylvania | Sugar Grove | Sugar Grove, PA |
| Pennsylvania | Sugar Run | Sugar Run, PA |
| Pennsylvania | Sugarloaf | Sugarloaf, PA |
| Pennsylvania | Summerdale | Summerdale, PA |
| Pennsylvania | Summerhill | Summerhill, PA |
| Pennsylvania | Summerville | Summerville, PA |
| Pennsylvania | Summit Hill | Summit Hill, PA |
| Pennsylvania | Summit Station | Summit Station, PA |