There are 11 zip codes in Preble County, Ohio. The most populated is 45320, located in Eaton. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
45320Eaton15,525
45311Camden6,056
45381West Alexandria5,690
45338Lewisburg4,639
45347New Paris4,081
45321Eldorado1,235
45382West Manchester1,082
45003College Corner624
45330Gratis614
45378Verona536
45070West Elkton151

Preble County, Ohio Zip Codes by Population (2024)