22 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 16214 | Clarion | 8,655 |
| 16242 | New Bethlehem | 4,328 |
| 16232 | Knox | 4,091 |
| 16254 | Shippenville | 3,468 |
| 16248 | Rimersburg | 3,177 |
| 16049 | Parker | 2,897 |
| 16255 | Sligo | 1,956 |
| 16258 | Strattanville | 1,870 |
| 16235 | Lucinda | 1,407 |
| 16233 | Leeper | 1,148 |
| 16224 | Fairmount City | 827 |
| 16230 | Hawthorn | 485 |
| 16334 | Marble | 448 |
| 16054 | Saint Petersburg | 358 |
| 16326 | Fryburg | 316 |
| 16036 | Foxburg | 297 |
| 16260 | Vowinckel | 284 |
| 16331 | Kossuth | 147 |
| 16213 | Callensburg | 119 |
| 16332 | Lickingville | 88 |
| 16220 | Crown | 72 |
| 16361 | Tylersburg | 38 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 22 ZCTAs in Clarion County, Pennsylvania (US Census).