| Locality | Post Code |
|---|---|
| Shirley Mills, Piscataquis | 04485 |
| Wellington, Piscataquis | 04942 |
| Williamsburg, Piscataquis | 04414 |
| Willimantic, Piscataquis | 04443 |
| Maine Postal Codes | |
|---|---|
| York | Washington |
| Waldo | Somerset |
| Sagadahoc | Piscataquis |
| Penobscot | Oxford |
| Lincoln | Knox |
| Kennebec | Hancock |
| Franklin | Cumberland |
| Aroostook | Androscoggin |