Onslow zip code
Zip code in Onslow, IA
The location Onslow belongs to Jones County, state of Iowa. Onslow has been assigned with the zip code 52321.
Onslow 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 |
|---|---|---|
| 52321 | STANDARD | 370 |
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