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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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Oakland County ZIP Codes

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

County State ZIP Code City Area Codes
Oakland County MI 48367 Leonard 248, 586, 810, 947
Oakland County MI 48370 Oxford 248, 810, 947
Oakland County MI 48371 Oxford 248, 810, 947
Oakland County MI 48374 Novi 248, 947
Oakland County MI 48375 Novi 248, 947
Oakland County MI 48376 Novi 248
Oakland County MI 48377 Novi 248, 947
Oakland County MI 48380 Milford 248, 810, 947
Oakland County MI 48381 Milford 248, 947
Oakland County MI 48382 Commerce Township 248, 947
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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.