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_ |
|---|---|---|---|---|
| Silver Lake | 1 | Susquehanna County | 18812 |  |
| Silver Lake | 1 | York County | 17339 |  |
| Silver Lake Township | 1 | Susquehanna County |  |  |
| Silver Mills | 1 | Bedford County |  |  |
| Silver Spring | 1 | Lancaster County | 17575 |  |
| Silver Spring | 1 | Pike County |  |  |
| Silver Spring Township | 1 | Cumberland County |  |  |
| Silverbrook | 1 | Schuylkill County |  |  |
| Silverdale | 1 | Bucks County | 18962 |  |
| Silverton | 1 | Schuylkill County |  |  |
| Silverville | 1 | Butler County | 16055 |  |
| Simmonstown | 1 | Lancaster County | 17527 |  |
| Simpson | 1 | Fayette County |  |  |
| Simpson | 1 | Lackawanna County | 18407 |  |
| Simpson | 1 | McKean County |  |  |
| Simpson Store | 1 | Washington County | 15377 |  |
| Sinclair | 1 | Westmoreland County |  |  |
| Singersville | 1 | Dauphin County | 17018 |  |
| Sinking Spring | 1 | Berks County | 19608 |  |
| Sinking Valley | 1 | Blair County | 16601 |  |