About ZIP code 51040
The ZIP code 51040 routes mail to Onawa in the Iowa 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
51040 - Onawa
ZIP code 51040 is Onawa in Iowa, United States.
| ZIP code | 51040 |
| Place | Onawa |
| Region | Iowa |
| District | Monona |
| Country | United States (US) |
| Coordinates | 42.037, -96.1072 (map) |