Montana Zip Codes

Montana has a total of 437 ZIP codes, reflecting its vast geography and sparsely populated regions, along with a few growing urban centers. All ZIP codes in Montana begin with the digits 59, which are unique to the state. The range starts at 59001 in Absarokee, located in southern Montana, and extends to 59937 in Whitefish, a town near Glacier National Park.

The 590 to 593 series primarily covers eastern Montana, including towns like Billings, Miles City, and Glendive, which serve as key hubs in this predominantly rural area. The 594 to 596 series spans central Montana, covering cities such as Great Falls, Helena (the state capital), and surrounding communities. The 597 to 599 series serves western Montana, encompassing cities like Bozeman, Missoula, and Kalispell, as well as the scenic Rocky Mountain regions.

Montana’s ZIP codes are essential for organizing mail delivery across its expansive and diverse terrain, from remote ranchlands to vibrant urban centers. They also help define school districts, voting precincts, and regional boundaries, while supporting industries such as agriculture, tourism, and outdoor recreation.

In the table below, you can see all Montana zip codes listed by city, town and village as well as county affiliated. With 360 cities (and towns) and 56 counties (and county-equivalents), Montana is the 43rd largest state by population (1,042,520)  and 4th largest one by land area (376,962 km²) in the United States.

The capital of Montana is Billings and major cities include Missoula, Great Falls, Bozeman, Butte, and Helena.

List of Montana Zip Codes by City