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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Michigan ZIP Codes

Complete postal directory, details, and geographic map for the State of Michigan.

State ZIP Code City County Area Codes
MI 49445 Muskegon Muskegon County 231
MI 49446 New Era Oceana County 231
MI 49448 Nunica Ottawa County 231, 616
MI 49449 Pentwater Oceana County 231
MI 49450 Pullman Allegan County 269
MI 49451 Ravenna Muskegon County 231, 616
MI 49452 Rothbury Oceana County 231
MI 49453 Saugatuck Allegan County 269, 616
MI 49454 Scottville Mason County 231
MI 49455 Shelby Oceana County 231
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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.