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	49356	Ada	Kent County	`616`
MI	49357	Ada	Kent County	`616`
MI	49401	Allendale	Ottawa County	`616`
MI	49402	Branch	Mason County	`231`
MI	49403	Conklin	Ottawa County	`231, 616`
MI	49404	Coopersville	Ottawa County	`231, 616`
MI	49405	Custer	Mason County	`231`
MI	49406	Douglas	Allegan County	`269`
MI	49408	Fennville	Allegan County	`269`
MI	49409	Ferrysburg	Ottawa County	`616`

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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.