There are 10 zip codes in Hardin County, Kentucky. The most populated is 42701, located in Elizabethtown. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4270152,618Elizabethtown
4016023,539Radcliff
401218,655Fort Knox
401625,666Rineyville
427245,406Cecilia
427322,411Eastview
427402,157Glendale
427762,025Sonora
427121,681Big Clifty
42788227White Mills

Zip Codes in Hardin County, Kentucky by Population (2024)