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.

42,735 verified records

All states and U.S. territories

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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	59414	Black Eagle	Cascade County	`406`
MT	59416	Brady	Pondera County	`406`
MT	59417	Browning	Glacier County	`406`
MT	59418	Buffalo	Judith Basin County	`406`
MT	59419	Bynum	Teton County	`406`
MT	59420	Carter	Chouteau County	`406`
MT	59421	Cascade	Cascade County	`406`
MT	59422	Choteau	Teton County	`406`
MT	59424	Coffee Creek	Fergus County	`406`
MT	59425	Conrad	Pondera County	`406`

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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.