| Zip Code | City | Population ↓ |
|---|---|---|
| 16652 | Huntingdon | 15,866 |
| 17066 | Mount Union | 5,102 |
| 16611 | Alexandria | 2,665 |
| 17264 | Three Springs | 2,292 |
| 16669 | Petersburg | 2,099 |
| 16654 | Huntingdon | 1,906 |
| 17052 | Mapleton Depot | 1,474 |
| 17243 | Orbisonia | 1,264 |
| 17060 | Mill Creek | 1,248 |
| 16657 | James Creek | 1,170 |
| 17260 | Shirleysburg | 1,090 |
| 17255 | Shade Gap | 992 |
| 16647 | Hesston | 864 |
| 16621 | Broad Top | 604 |
| 16674 | Robertsdale | 548 |
| 17213 | Blairs Mills | 525 |
| 16623 | Cassville | 492 |
| 17002 | Allensville | 451 |
| 17253 | Saltillo | 433 |
| 17249 | Rockhill Furnace | 386 |
| 16694 | Wood | 355 |
| 16683 | Spruce Creek | 353 |
| 16685 | Todd | 303 |
| 16634 | Dudley | 262 |
| 17239 | Neelyton | 209 |
| 17215 | Burnt Cabins | 182 |
| 16622 | Calvin | 82 |
| 16638 | Entriken | 58 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 28 ZCTAs in Huntingdon County, Pennsylvania (US Census).