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 49263 Norvell Jackson County 517
MI 49264 Onondaga Ingham County 517
MI 49265 Onsted Lenawee County 517
MI 49266 Osseo Hillsdale County 517
MI 49267 Ottawa Lake Monroe County 419, 517, 567, 734
MI 49268 Palmyra Lenawee County 517
MI 49269 Parma Jackson County 517
MI 49270 Petersburg Monroe County 517, 734
MI 49271 Pittsford Hillsdale County 517
MI 49272 Pleasant Lake Jackson County 517
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Geographic Map of Michigan

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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.