| Locality | Post Code |
|---|---|
| Manor, Westmoreland | 15665 |
| Monessen, Westmoreland | 15062 |
| Mount Pleasant, Westmoreland | 15666 |
| Murrysville, Westmoreland | 15632, 15668 |
| New Alexandria, Westmoreland | 15670 |
| New Derry, Westmoreland | 15671 |
| New Florence, Westmoreland | 15944 |
| New Kensington, Westmoreland | 15068 |
| New Stanton, Westmoreland | 15672 |
| North Belle Vernon, Westmoreland | 15012 |
| North Huntingdon, Westmoreland | 15642 |
| North Irwin, Westmoreland | 15642 |
| Norvelt, Westmoreland | 15674 |
| Park, Westmoreland | 15690 |
| Parnassus, Westmoreland | 15068 |
| Penn, Westmoreland | 15675 |
| Pleasant Unity, Westmoreland | 15676 |
| Pricedale, Westmoreland | 15072 |
| Rector, Westmoreland | 15677 |
| Rillton, Westmoreland | 15678 |
| Ruffs Dale, Westmoreland | 15679 |
| Salina, Westmoreland | 15680 |
| Saltsburg, Westmoreland | 15681 |
| Scottdale, Westmoreland | 15683 |
| Seward, Westmoreland | 15954 |
| Slickville, Westmoreland | 15684 |