13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 4426 | Dover Foxcroft | 4,975 |
| 4462 | Millinocket | 4,462 |
| 4463 | Milo | 2,649 |
| 4443 | Guilford | 2,152 |
| 4441 | Greenville | 1,866 |
| 4414 | Brownville | 1,743 |
| 4479 | Sangerville | 1,103 |
| 4406 | Abbot | 739 |
| 4464 | Monson | 561 |
| 4481 | Sebec | 487 |
| 4415 | Brownville Junction | 316 |
| 4485 | Shirley Mills | 205 |
| 4442 | Greenville Junction | 132 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in Piscataquis County, Maine (US Census).