There are 8 zip codes in Warren County, Kentucky. The most populated is 42101, located in Bowling Green. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4210162,041Bowling Green
4210440,285Bowling Green
4210322,130Bowling Green
421717,073Smiths Grove
421225,385Alvaton
422742,593Rockfield
421591,384Oakland
421701,378Woodburn

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