Ionia County Michigan is covered by a total of 19 ZIP Codes. There are 11 ZIP Codes in Ionia County that extend into adjacent counties (Barry County, Clinton County, Eaton County, Gratiot County, Kent County, and Montcalm County). Of the ZIP codes within or partially within Ionia County there are 17 Standard ZIP Codes and 2 PO Box ZIP Codes.
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 Ionia County 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 | |||
|---|---|---|---|---|---|
| Belding | Standard | |||
| Clarksville | Standard | |||
| Fenwick | Standard | |||
| Grand Ledge | Standard | |||
| Hubbardston | Standard | |||
| Ionia | Standard | |||
| Lake Odessa | Standard | |||
| Lyons | Standard | |||
| Muir | Standard | |||
| Orleans | Standard | |||
| Palo | PO Box | |||
| Pewamo | Standard | |||
| Portland | Standard | |||
| Saranac | Standard | |||
| Smyrna | PO Box | |||
| Sunfield | Standard | |||
| Westphalia | Standard | |||
| Freeport | Standard | |||
| Lowell | Standard |