| Locality | Post Code |
|---|---|
| Parker, Clarion | 16049 |
| Rimersburg, Clarion | 16248 |
| Saint Petersburg, Clarion | 16054 |
| Shippenville, Clarion | 16254 |
| Sligo, Clarion | 16255 |
| Snydersburg, Clarion | 16257 |
| Strattanville, Clarion | 16258 |
| Summerville, Clarion | 15864 |
| Turkey City, Clarion | 16058 |
| Tylersburg, Clarion | 16361 |
| Venus, Clarion | 16364 |
| Vowinckel, Clarion | 16260 |