Iona Township South Dakota is covered by a total of 2 ZIP Codes. The ZIP Codes in Iona Township range from 57533 to 57569.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Iona Township and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Gregory | Standard | |||
| Reliance | Standard |