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

Maps and coordinates

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	41855	Thornton	Letcher County	`606`
KY	41858	Whitesburg	Letcher County	`606`
KY	41859	Dema	Knott County	`606`
KY	41861	Raven	Knott County	`606`
KY	41862	Topmost	Knott County	`606`
KY	42001	Paducah	McCracken County	`270, 364`
KY	42002	Paducah	Mccracken County	`270`
KY	42003	Paducah	McCracken County	`270, 364`
KY	42020	Almo	Calloway County	`270, 364`
KY	42021	Arlington	Carlisle County	`270, 364`

Page 70 of 97

Geographic Map of Kentucky

Postal context

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.