Onawa ZIP Code Finder by Area and Number Iowa
The Onawa zip code is 51040 in Iowa helps people find the correct mailing location for homes, businesses, and services in Onawa.
Onawa Zip Code - 51040
| City | Onawa |
| Zip Code | 51040 |
| State | Iowa |
| County | Monona |
| Population | 3,388 |
| Latitude | 42.03073 |
| Longitude | -96.0706 |
| Time Zone | America/Chicago |
The Onawa Iowa zip code is used by USPS for mail delivery, shipping, and address identification across Onawa and nearby Iowa cities.
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