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 42131 Etoile Barren County 270, 364
KY 42133 Fountain Run Monroe County 270, 364, 615, 629
KY 42134 Franklin Simpson County 270, 364, 615, 629
KY 42135 Franklin Simpson County 270
KY 42140 Gamaliel Monroe County 270, 364, 615, 629, 931
KY 42141 Glasgow Barren County 270, 364
KY 42142 Glasgow Barren County 270
KY 42151 Hestand Monroe County 270, 364, 931
KY 42152 Hiseville Barren County 270
KY 42153 Holland Allen 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.