There are 4 zip codes in Marshall County, Kentucky. The most populated is 42025, located in Benton. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4202518,836Benton
420296,092Calvert City
420443,953Gilbertsville
420482,314Hardin
showing: 4 rows

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