10 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 17059 | Mifflintown | 7,524 |
| 17049 | McAlisterville | 3,152 |
| 17082 | Port Royal | 2,985 |
| 17094 | Thompsontown | 2,598 |
| 17058 | Mifflin | 1,609 |
| 17021 | East Waterford | 1,008 |
| 17035 | Honey Grove | 828 |
| 17014 | Cocolamus | 150 |
| 17076 | Oakland Mills | 128 |
| 17056 | Mexico | 29 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 10 ZCTAs in Juniata County, Pennsylvania (US Census).