Onawa zipcode
| City | Onawa |
| ZIP Code | 51040 |
| Type | Standard |
| State Code | IA |
| State | Iowa |
ZIP code of Onawa is 51040. This place is located in Iowa state in US. To send any postal service to Onawa, you must use 51040 zipcode.
The ZIP code 51040 is also used with 1 more city name of Iowa.
- Turin, IA