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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.

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Gratiot County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Gratiot County.

County State ZIP Code City Area Codes
Gratiot County MI 48615 Breckenridge 989
Gratiot County MI 48662 Wheeler 989
Gratiot County MI 48801 Alma 989
Gratiot County MI 48802 Alma 989
Gratiot County MI 48806 Ashley 989
Gratiot County MI 48807 Bannister 989
Gratiot County MI 48830 Elm Hall 989
Gratiot County MI 48832 Elwell 989
Gratiot County MI 48847 Ithaca 989
Gratiot County MI 48856 Middleton 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.