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

Zip code
59405
59401
59468
59412
59440
59472
59414
59483
59487
59436
59443
59477
59403
59465
59485
59404
59402
59480
59421
59406
59463

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

Cascade 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 Cascade County County?

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

Do ZIP codes in Cascade 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.