Irwin zip code
Zip code in Irwin, IA
The location Irwin belongs to Shelby County, state of Iowa. Irwin has been assigned with the zip code 51446.
Irwin is the official name of the location so if you want to use the US Postal Service you must use that name.
| Zip code | Type | Population |
|---|---|---|
| 51446 | STANDARD | 460 |
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