About ZIP code 18631
The ZIP code 18631 routes mail to Mifflinville in the Pennsylvania region of United States. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
United States ยท ZIP code
18631 - Mifflinville
ZIP code 18631 is Mifflinville in Pennsylvania, United States.
| ZIP code | 18631 |
| Place | Mifflinville |
| Region | Pennsylvania |
| District | Columbia |
| Country | United States (US) |
| Coordinates | 41.0323, -76.308 (map) |