There are 4 zip codes in Grayson County, Kentucky. The most populated is 42754, located in Leitchfield. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
42754Leitchfield15,918
42726Clarkson4,960
42721Caneyville3,954
42762Millwood257

Grayson County, Kentucky Zip Codes by Population (2024)