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 49342 Rodney Mecosta County 231, 989
MI 49343 Sand Lake Kent County 231, 616
MI 49344 Shelbyville Allegan County 269
MI 49345 Sparta Kent County 616
MI 49346 Stanwood Mecosta County 231, 989
MI 49347 Trufant Montcalm County 231, 616, 989
MI 49348 Wayland Allegan County 269, 616
MI 49349 White Cloud Newaygo County 231
MI 49351 Rockford Kent County 616
MI 49355 Ada 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.