U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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State directory

Montana ZIP Codes

Complete postal directory, details, and geographic map for the State of Montana.

State ZIP Code City County Area Codes
MT 59715 Bozeman Gallatin County 406
MT 59716 Big Sky Gallatin County 406
MT 59717 Bozeman Gallatin County 406
MT 59718 Bozeman Gallatin County 406
MT 59719 Bozeman Gallatin County 406
MT 59720 Cameron Madison County 208, 406, 986
MT 59721 Cardwell Jefferson County 406
MT 59722 Deer Lodge Powell County 406
MT 59724 Dell Beaverhead County 208, 406, 986
MT 59725 Dillon Beaverhead County 208, 406, 986
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.