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
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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 59259 Richey Dawson County 406
MT 59260 Richland Valley County 306, 406, 474
MT 59261 Saco Phillips County 306, 406, 474, 639
MT 59262 Savage Richland County 406
MT 59263 Scobey Daniels County 306, 406, 474
MT 59270 Sidney Richland County 306, 406, 474, 701
MT 59273 Vandalia Valley County 406
MT 59274 Vida McCone County 406
MT 59275 Westby Sheridan County 306, 406, 474, 701
MT 59276 Whitetail Daniels County 306, 406, 474
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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.