22 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 16214 | Clarion | 8,494 |
| 16242 | New Bethlehem | 4,513 |
| 16232 | Knox | 4,025 |
| 16254 | Shippenville | 3,516 |
| 16248 | Rimersburg | 3,216 |
| 16049 | Parker | 2,965 |
| 16255 | Sligo | 1,981 |
| 16258 | Strattanville | 1,837 |
| 16235 | Lucinda | 1,356 |
| 16233 | Leeper | 1,195 |
| 16224 | Fairmount City | 763 |
| 16230 | Hawthorn | 501 |
| 16334 | Marble | 453 |
| 16054 | Saint Petersburg | 333 |
| 16036 | Foxburg | 305 |
| 16260 | Vowinckel | 293 |
| 16326 | Fryburg | 283 |
| 16331 | Kossuth | 123 |
| 16332 | Lickingville | 121 |
| 16213 | Callensburg | 107 |
| 16361 | Tylersburg | 49 |
| 16220 | Crown | 19 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 22 ZCTAs in Clarion County, Pennsylvania (US Census).