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

Michigan ZIP Codes

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

State ZIP Code City County Area Codes
MI 49309 Bitely Newaygo County 231
MI 49310 Blanchard Isabella County 231, 989
MI 49311 Bradley Allegan County 269
MI 49312 Brohman Newaygo County 231
MI 49314 Burnips Allegan County 616
MI 49315 Byron Center Kent County 616
MI 49316 Caledonia Kent County 269, 616
MI 49317 Cannonsburg Kent County 616
MI 49318 Casnovia Muskegon County 231, 616
MI 49319 Cedar Springs Kent County 616
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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.