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	48821	Dimondale	Eaton County	`517`
MI	48822	Eagle	Clinton County	`517`
MI	48823	East Lansing	Ingham County	`517`
MI	48824	East Lansing	Ingham County	`517`
MI	48825	East Lansing	Ingham County	`517`
MI	48826	East Lansing	Ingham County	`517`
MI	48827	Eaton Rapids	Eaton County	`517`
MI	48829	Edmore	Montcalm County	`989`
MI	48830	Elm Hall	Gratiot County	`989`
MI	48831	Elsie	Clinton County	`989`

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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.