U.S. postal lookup

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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Ohio County ZIP Codes

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

County State ZIP Code City Area Codes
Ohio County IN 47040 Rising Sun 812, 859, 930
Ohio County KY 42320 Beaver Dam 270, 364
Ohio County KY 42328 Centertown 270, 364
Ohio County KY 42333 Cromwell 270, 364
Ohio County KY 42338 Dundee 270, 364
Ohio County KY 42343 Fordsville 270, 364
Ohio County KY 42347 Hartford 270, 364
Ohio County KY 42349 Horse Branch 270, 364
Ohio County KY 42354 Mc Henry 270, 364
Ohio County KY 42361 Olaton 270, 364
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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.