Ionia County, located in the state of Michigan, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to Ionia County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
48849
48860
49331
49325
48846
48875
48881
48809
48838
48890
48834
48815
48865
48873
48870
48845
48894
48837
48851
48861
49302

To know more about Ionia County, click the button below:

Ionia County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in Ionia County County?

There are approximately 21 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Ionia County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.