List of places in Pennsylvania: Sa–Si List of places in Pennsylvania: Sa–Si List of places in Pennsylvania: Sa–Si

| Name_of_place | Number_of_counties | Principal_county | Lower_zip_code | Upper_zip_code_ |
|---|---|---|---|---|
| Sewickley Township | 1 | Allegheny County |  |  |
| Sewickley Township | 1 | Westmoreland County |  |  |
| Seybertown | 1 | Armstrong County | 16028 |  |
| Seyfert | 1 | Berks County | 19508 |  |
| Seyoc | 1 | Perry County |  |  |
| Shackamaxon | 1 | Philadelphia County |  |  |
| Shade Gap | 1 | Huntingdon County | 17255 |  |
| Shade Township | 1 | Somerset County |  |  |
| Shade Valley | 1 | Huntingdon County | 17213 |  |
| Shadeland | 1 | Crawford County | 16435 |  |
| Shades Glen | 1 | Luzerne County | 18661 |  |
| Shadle | 1 | Snyder County | 15666 |  |
| Shado-wood Village | 1 | Indiana County | 15701 |  |
| Shadow Shuttle | 1 | Allegheny County | 15235 |  |
| Shady Grove | 1 | Franklin County | 17256 |  |
| Shady Plain | 1 | Armstrong County | 15686 |  |
| Shadyside | 1 | Allegheny County | 15232 |  |
| Shaffer | 1 | Clearfield County | 15801 |  |
| Shaffers Corner | 1 | Fayette County | 15416 |  |