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
Maps and coordinates
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 48386 White Lake Oakland County 248, 947
MI 48387 Union Lake Oakland County 248
MI 48390 Walled Lake Oakland County 248, 947
MI 48391 Walled Lake Oakland County 248
MI 48393 Wixom Oakland County 248, 947
MI 48397 Warren Macomb County 586
MI 48401 Applegate Sanilac County 810
MI 48410 Argyle Sanilac County 810
MI 48411 Atlas Genesee County 810
MI 48412 Attica Lapeer County 810
Page 29 of 117

Geographic Map of Michigan

Postal context

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.