Mercer County, located in the state of Ohio, 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 Mercer County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
45865
45862
45860
45883
45882
45826
45822
45898
45869
45388
45894
45885
45887
45846
45348
45828
45845
45310
45866

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

Mercer 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 Mercer County County?

There are approximately 19 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Mercer 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.