About ZIP code 57439
The ZIP code 57439 routes mail to Ferney in the South Dakota 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
57439 - Ferney
ZIP code 57439 is Ferney in South Dakota, United States.
| ZIP code | 57439 |
| Place | Ferney |
| Region | South Dakota |
| District | Brown |
| Country | United States (US) |
| Coordinates | 45.329, -98.0837 (map) |