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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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Alcona County ZIP Codes

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

County State ZIP Code City Area Codes
Alcona County MI 48705 Barton City 989
Alcona County MI 48721 Black River 989
Alcona County MI 48728 Curran 989
Alcona County MI 48737 Glennie 989
Alcona County MI 48738 Greenbush 989
Alcona County MI 48740 Harrisville 989
Alcona County MI 48742 Lincoln 989
Alcona County MI 48745 Mikado 989
Alcona County MI 48762 Spruce 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.