| Locality | Post Code |
|---|---|
| Anthony, Northumberland | 17772 |
| Atlas, Northumberland | 17851 |
| Augustaville, Northumberland | 17801 |
| Bear Gap, Northumberland | 17824 |
| Bear Valley, Northumberland | 17872 |
| Boydtown, Northumberland | 17872 |
| Camp Grove, Northumberland | 17830 |
| Chillisquaque, Northumberland | 17850 |
| Coal, Northumberland | 17872 |
| Coal Run, Northumberland | 17866 |
| Coal Township, Northumberland | 17866 |
| Comly, Northumberland | 17772 |
| Connersville, Northumberland | 17851 |
| Dalmatia, Northumberland | 17017 |
| Delaware Run, Northumberland | 17777 |
| Dewart, Northumberland | 17730 |
| Diamondtown, Northumberland | 17851 |
| Dooleyville, Northumberland | 17851 |
| Dornsife, Northumberland | 17823 |
| Doutyville, Northumberland | 17872 |
| Dunkelbergers, Northumberland | 17872 |
| East Chillisquaq, Northumberland | 17847 |
| East Lewisburg, Northumberland | 17847 |
| Elysburg, Northumberland | 17824 |
| Excelsior, Northumberland | 17866 |
| Fisherdale, Northumberland | 17824 |