About ZIP code 48721
The ZIP code 48721 routes mail to Black River in the Michigan 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
48721 - Black River
ZIP code 48721 is Black River in Michigan, United States.
| ZIP code | 48721 |
| Place | Black River |
| Region | Michigan |
| District | Alcona |
| Country | United States (US) |
| Coordinates | 44.8138, -83.3407 (map) |