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

Michigan ZIP Codes

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

State ZIP Code City County Area Codes
MI 49069 Marshall Calhoun County 269
MI 49070 Martin Allegan County 269
MI 49071 Mattawan Van Buren County 269
MI 49072 Mendon St. Joseph County 269
MI 49073 Nashville Barry County 269, 517
MI 49074 Nazareth Kalamazoo County 269
MI 49075 Nottawa St. Joseph County 269
MI 49076 Olivet Eaton County 269, 517
MI 49077 Oshtemo Kalamazoo County 269
MI 49078 Otsego Allegan County 269
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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.