| Post Office | Machias |
| Division | Washington |
| Pincode | 4654 |
| Post Office | Calais |
| Division | Washington |
| Pincode | 4619 |
| Post Office | Baileyville |
| Division | Washington |
| Pincode | 4694 |
| Post Office | Lubec |
| Division | Washington |
| Pincode | 4652 |
| Post Office | Milbridge |
| Division | Washington |
| Pincode | 4658 |
| Post Office | Princeton |
| Division | Washington |
| Pincode | 4668 |
| Post Office | Addison |
| Division | Washington |
| Pincode | 4606 |
| Post Office | East Machias |
| Division | Washington |
| Pincode | 4630 |
| Post Office | Eastport |
| Division | Washington |
| Pincode | 4631 |
32 City in Washington | List of Zip Codes Location In Maine and Your selected County Washington