Iona zip code
Zip code in Iona, SD
The location Iona belongs to Gregory County, state of South Dakota. Iona has been assigned with the zip code 57533.
The location name Iona is listed as acceptable by the US Postal Service so it can be used in your mailings just fine. You can also use any of the following names: Dixon, Iona.| Zip code | Type | Population |
|---|---|---|
| 57533 | STANDARD | 1,600 |
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