13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 04426 | Dover Foxcroft | 4,975 |
| 04462 | Millinocket | 4,462 |
| 04463 | Milo | 2,649 |
| 04443 | Guilford | 2,152 |
| 04441 | Greenville | 1,866 |
| 04414 | Brownville | 1,743 |
| 04479 | Sangerville | 1,103 |
| 04406 | Abbot | 739 |
| 04464 | Monson | 561 |
| 04481 | Sebec | 487 |
| 04415 | Brownville Junction | 316 |
| 04485 | Shirley Mills | 205 |
| 04442 | 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).