City · Montana · United States

Great Falls, MT — ZIP codes

5 ZIP codes · Cascade County

City: Great Falls
County: Cascade
State: Montana
Country: United States
Postal codes: 5940159403594045940559406
Single source
Coordinates: 47.5098, -111.2734 View on OpenStreetMap

ZIP codes (5)

Postal code	Place name	Verification
59401	Great Falls	Single source
59403	Great Falls	Single source
59404	Great Falls	Single source
59405	Great Falls	Single source
59406	Great Falls	Single source

Sources and verification

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Last generated : 2026-08-21. Report an error.