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

Zip code
51550
51557
51564
51563
51579
51545
51555
51562
51523
51529
51565
51530
51559
51556
51546
51570
51558

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

Harrison 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 Harrison County County?

There are approximately 17 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Harrison 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.