ZIP Code 51040 – Onawa, Iowa
The 51040 ZIP Code belongs to Onawa, Iowa. The population in this 51040 ZIP code is 3,388. The latitude is 42.03073 and longitude is -96.0706 in 51040 Onawa, Iowa. The time zone for this 51040 ZIP code is America/Chicago.
| City | Onawa |
| Zip Code | 51040 |
| State | Iowa |
| County | Monona |
| Population | 3,388 |
| Latitude | 42.03073 |
| Longitude | -96.0706 |
| Time Zone | America/Chicago |