Onawa zip code
Zip code in Onawa, IA
The location Onawa belongs to Monona County, state of Iowa. Onawa has been assigned with the zip code 51040.
Onawa is the official name of the location so if you want to use the US Postal Service you must use that name. You can also use any of the following names: Turin.
| Zip code | Type | Population |
|---|---|---|
| 51040 | STANDARD | 2,950 |
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