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 48303 Bloomfield Hills Oakland County 248
MI 48304 Bloomfield Hills Oakland County 248, 947
MI 48306 Rochester Oakland County 248, 947
MI 48307 Rochester Oakland County 248, 586, 947
MI 48308 Rochester Oakland County 248
MI 48309 Rochester Oakland County 248, 947
MI 48310 Sterling Heights Macomb County 248, 586, 947
MI 48311 Sterling Heights Macomb County 586
MI 48312 Sterling Heights Macomb County 586
MI 48313 Sterling Heights Macomb County 586
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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.