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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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Posey County ZIP Codes

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

County State ZIP Code City Area Codes
Posey County IN 47612 Cynthiana 812, 930
Posey County IN 47616 Griffin 618, 812, 930
Posey County IN 47620 Mount Vernon 270, 364, 618, 812, 930
Posey County IN 47631 New Harmony 618, 812, 930
Posey County IN 47633 Poseyville 812, 930
Posey County IN 47638 Wadesville 812, 930

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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.