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.

42,735 verified records
All states and U.S. territories
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State directory

Kentucky ZIP Codes

Complete postal directory, details, and geographic map for the State of Kentucky.

State ZIP Code City County Area Codes
KY 42327 Calhoun McLean County 270, 364
KY 42328 Centertown Ohio County 270, 364
KY 42330 Central City Muhlenberg County 270, 364
KY 42332 Cleaton Muhlenberg County 270, 364
KY 42333 Cromwell Ohio County 270, 364
KY 42334 Curdsville Henderson County 270
KY 42337 Drakesboro Muhlenberg County 270, 364
KY 42338 Dundee Ohio County 270, 364
KY 42339 Dunmor Muhlenberg County 270, 364
KY 42343 Fordsville Ohio County 270, 364
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Geographic Map of Kentucky

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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.