About ZIP code 54421
The ZIP code 54421 routes mail to Colby in the Wisconsin 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
54421 - Colby
ZIP code 54421 is Colby in Wisconsin, United States.
| ZIP code | 54421 |
| Place | Colby |
| Region | Wisconsin |
| District | Clark |
| Country | United States (US) |
| Coordinates | 44.9117, -90.3144 (map) |