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
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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 42441 Nebo Hopkins County 270, 364
KY 42442 Nortonville Hopkins County 270, 364
KY 42444 Poole Webster County 270, 364
KY 42445 Princeton Caldwell County 270, 364
KY 42450 Providence Webster County 270, 364
KY 42451 Reed Henderson County 270, 364
KY 42452 Robards Henderson County 270, 364
KY 42453 Saint Charles Hopkins County 270, 364
KY 42455 Sebree Webster County 270, 364
KY 42456 Slaughters Webster County 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.