10 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 17059 | Mifflintown | 7,645 |
| 17049 | McAlisterville | 3,145 |
| 17082 | Port Royal | 3,004 |
| 17094 | Thompsontown | 2,559 |
| 17058 | Mifflin | 1,599 |
| 17021 | East Waterford | 969 |
| 17035 | Honey Grove | 833 |
| 17014 | Cocolamus | 152 |
| 17076 | Oakland Mills | 123 |
| 17056 | Mexico | 32 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 10 ZCTAs in Juniata County, Pennsylvania (US Census).