16 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 16365 | Warren | 17,377 |
| 16345 | Russell | 3,670 |
| 16371 | Youngsville | 3,129 |
| 16350 | Sugar Grove | 2,332 |
| 16340 | Pittsfield | 1,940 |
| 16313 | Clarendon | 1,805 |
| 16351 | Tidioute | 1,760 |
| 16347 | Sheffield | 1,535 |
| 16436 | Spring Creek | 801 |
| 16402 | Bear Lake | 703 |
| 16405 | Columbus | 555 |
| 16420 | Grand Valley | 447 |
| 16329 | Irvine | 428 |
| 16352 | Tiona | 226 |
| 16416 | Garland | 136 |
| 16312 | Chandlers Valley | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in Warren County, Pennsylvania (US Census).