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U.S. ZIP Codes Database 2026

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Lenawee County ZIP Codes

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

County State ZIP Code City Area Codes
Lenawee County MI 49256 Morenci 419, 517, 567
Lenawee County MI 49265 Onsted 517
Lenawee County MI 49268 Palmyra 517
Lenawee County MI 49276 Riga 517, 734
Lenawee County MI 49279 Sand Creek 419, 517, 567
Lenawee County MI 49286 Tecumseh 517
Lenawee County MI 49287 Tipton 517, 734
Lenawee County MI 49289 Weston 517
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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.