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 40032 La Grange Oldham County 502
KY 40033 Lebanon Marion County 270, 364, 859
KY 40036 Lockport Henry County 502
KY 40037 Loretto Marion County 270, 364, 502, 859
KY 40040 Mackville Washington County 859
KY 40041 Masonic Home Jefferson County 502
KY 40045 Milton Trimble County 502
KY 40046 Mount Eden Spencer County 502
KY 40047 Mount Washington Bullitt County 502
KY 40048 Nazareth Nelson County 502
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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.