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 48853 Maple Rapids Clinton County 989
MI 48854 Mason Ingham County 517
MI 48855 Howell Livingston County 517, 810
MI 48856 Middleton Gratiot County 989
MI 48857 Morrice Shiawassee County 517, 989
MI 48858 Mount Pleasant Isabella County 989
MI 48859 Mount Pleasant Isabella County 989
MI 48860 Muir Ionia County 616, 989
MI 48861 Mulliken Eaton County 517
MI 48862 North Star Gratiot County 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.