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	59064	Pompeys Pillar	Yellowstone County	`406`
MT	59065	Pray	Park County	`406`
MT	59066	Pryor	Big Horn County	`406`
MT	59067	Rapelje	Stillwater County	`406`
MT	59068	Red Lodge	Carbon County	`307, 406`
MT	59069	Reed Point	Stillwater County	`406`
MT	59070	Roberts	Carbon County	`406`
MT	59071	Roscoe	Carbon County	`406`
MT	59072	Roundup	Musselshell County	`406`
MT	59073	Roundup	Musselshell 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.