22 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 16214 | Clarion | 8,960 |
| 16232 | Knox | 4,287 |
| 16242 | New Bethlehem | 4,258 |
| 16254 | Shippenville | 3,551 |
| 16248 | Rimersburg | 3,126 |
| 16049 | Parker | 3,011 |
| 16255 | Sligo | 1,852 |
| 16258 | Strattanville | 1,600 |
| 16235 | Lucinda | 1,365 |
| 16233 | Leeper | 1,094 |
| 16224 | Fairmount City | 836 |
| 16230 | Hawthorn | 480 |
| 16334 | Marble | 419 |
| 16054 | Saint Petersburg | 381 |
| 16326 | Fryburg | 322 |
| 16036 | Foxburg | 314 |
| 16260 | Vowinckel | 228 |
| 16213 | Callensburg | 149 |
| 16331 | Kossuth | 143 |
| 16220 | Crown | 95 |
| 16332 | Lickingville | 51 |
| 16361 | Tylersburg | 30 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 22 ZCTAs in Clarion County, Pennsylvania (US Census).