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

Zip code
58103
58006
58038
58042
58126
58047
58012
58015
58104
58035
58105
58079
58106
58002
58031
58064
58108
58125
58124
58027
58107
58048
58021
58071
58004
58109
58121
58078
58052
58011
58029
58051
58046
58007
58036
58122
58102
58059
58005

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

Cass 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 Cass County County?

There are approximately 39 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Cass 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.