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_ |
|---|---|---|---|---|
| Scranton Army Ammunition Plant | 1 | Lackawanna County | 18502 |  |
| Scrubgrass Township | 1 | Venango County |  |  |
| Scullton | 1 | Somerset County | 15557 |  |
| Scyoc | 1 | Perry County | 17021 |  |
| Seagers | 1 | Lycoming County | 17756 |  |
| Seal | 1 | Chester County |  |  |
| Seamentown | 1 | Indiana County | 15729 |  |
| Seanor | 1 | Somerset County | 15953 |  |
| Searights | 1 | Fayette County | 15401 |  |
| Sears | 1 | Philadelphia County |  |  |
| Sebring | 1 | Tioga County | 16930 |  |
| Secane | 1 | Delaware County | 19018 |  |
| Secane Highlands | 1 | Delaware County | 19018 |  |
| Sechrist Mill | 1 | York County |  |  |
| Sedgwick | 1 | Adams County |  |  |
| Sedgwick | 1 | Philadelphia County |  |  |
| Sedwicks Mill | 1 | Butler County |  |  |
| Seek | 1 | Schuylkill County | 18218 |  |
| Seelyville | 1 | Wayne County | 18431 |  |
| Seemsville | 1 | Northampton County | 18067 |  |
| Seger | 1 | Westmoreland County | 15627 |  |