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 48809 Belding Ionia County 616
MI 48811 Carson City Montcalm County 989
MI 48812 Cedar Lake Montcalm County 989
MI 48813 Charlotte Eaton County 269, 517
MI 48815 Clarksville Ionia County 616
MI 48816 Cohoctah Livingston County 517
MI 48817 Corunna Shiawassee County 810, 989
MI 48818 Crystal Montcalm County 989
MI 48819 Dansville Ingham County 517
MI 48820 Dewitt Clinton County 517, 989
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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.