About ZIP code 57233
The ZIP code 57233 routes mail to Erwin 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
57233 - Erwin
ZIP code 57233 is Erwin in South Dakota, United States.
| ZIP code | 57233 |
| Place | Erwin |
| Region | South Dakota |
| District | Kingsbury |
| Country | United States (US) |
| Coordinates | 44.4915, -97.4103 (map) |