| Locality | Post Code |
|---|---|
| Bessemer, Lawrence | 16112 |
| Castle, Lawrence | 16105 |
| Edinburg, Lawrence | 16116 |
| Ellport, Lawrence | 16117 |
| Ellwood City, Lawrence | 16117 |
| Enon Valley, Lawrence | 16120 |
| Hillsville, Lawrence | 16132 |
| Neshannock, Lawrence | 16105 |
| New Bedford, Lawrence | 16140 |
| New Castle, Lawrence | 16101, 16102, 16105, 16108 |
| New Galilee, Lawrence | 16141 |
| New Wilmington, Lawrence | 16142 |
| Portersville, Lawrence | 16051 |
| Pulaski, Lawrence | 16143 |
| Villa Maria, Lawrence | 16155 |
| Volant, Lawrence | 16156 |
| Wampum, Lawrence | 16157 |
| West Pittsburg, Lawrence | 16160 |