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 49046 Delton Barry County 269
MI 49047 Dowagiac Cass County 269
MI 49048 Kalamazoo Kalamazoo County 269
MI 49050 Dowling Barry County 269, 517
MI 49051 East Leroy Calhoun County 269
MI 49052 Fulton Kalamazoo County 269
MI 49053 Galesburg Kalamazoo County 269
MI 49055 Gobles Van Buren County 269
MI 49056 Grand Junction Van Buren County 269
MI 49057 Hartford Van Buren County 269
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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.