| Locality | Postal Code |
|---|---|
| Acme, Westmoreland | 15610 |
| Adamsburg, Westmoreland | 15611 |
| Alverton, Westmoreland | 15612 |
| Apollo, Westmoreland | 15613 |
| Ardara, Westmoreland | 15615 |
| Armbrust, Westmoreland | 15616 |
| Arnold, Westmoreland | 15068 |
| Arona, Westmoreland | 15617 |
| Avonmore, Westmoreland | 15618 |
| Barking, Westmoreland | 15068 |
| Blairsville, Westmoreland | 15717 |
| Bolivar, Westmoreland | 15923 |
| Boltz, Westmoreland | 15954 |
| Bovard, Westmoreland | 15619 |
| Bradenville, Westmoreland | 15620 |
| Calumet, Westmoreland | 15621 |
| Champion, Westmoreland | 15622 |
| Claridge, Westmoreland | 15623 |
| Crabtree, Westmoreland | 15624 |
| Cramer, Westmoreland | 15954 |
| Darragh, Westmoreland | 15625 |
| Delmont, Westmoreland | 15626 |
| Derry, Westmoreland | 15627 |
| Donegal, Westmoreland | 15628 |
| East Vandergrift, Westmoreland | 15629 |
| Edmon, Westmoreland | 15618 |