13 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 04426 | Dover Foxcroft | 4,999 |
| 04462 | Millinocket | 4,464 |
| 04463 | Milo | 2,582 |
| 04443 | Guilford | 2,211 |
| 04441 | Greenville | 1,839 |
| 04414 | Brownville | 1,766 |
| 04479 | Sangerville | 1,136 |
| 04406 | Abbot | 675 |
| 04464 | Monson | 596 |
| 04481 | Sebec | 547 |
| 04485 | Shirley Mills | 234 |
| 04415 | Brownville Junction | 215 |
| 04442 | Greenville Junction | 208 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 13 ZCTAs in Piscataquis County, Maine (US Census).