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 48449 Lennon Shiawassee County 810, 989
MI 48450 Lexington Sanilac County 810
MI 48451 Linden Genesee County 517, 810, 989
MI 48453 Marlette Sanilac County 810, 989
MI 48454 Melvin Sanilac County 810
MI 48455 Metamora Lapeer County 248, 810, 947
MI 48456 Minden City Sanilac County 810, 989
MI 48457 Montrose Genesee County 810, 989
MI 48458 Mount Morris Genesee County 810
MI 48460 New Lothrop Shiawassee County 810, 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.