About ZIP code 57440
The ZIP code 57440 routes mail to Frankfort 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
57440 - Frankfort
ZIP code 57440 is Frankfort in South Dakota, United States.
| ZIP code | 57440 |
| Place | Frankfort |
| Region | South Dakota |
| District | Spink |
| Country | United States (US) |
| Coordinates | 44.8084, -98.2935 (map) |