There are 9 zip codes in Clinton County, Ohio. The most populated is 45177, located in Wilmington. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4517722,683Wilmington
451079,741Blanchester
451694,436Sabina
451133,826Clarksville
451593,454New Vienna
451481,822Midland
451461,063Martinsville
45164294Port William
4516650Reesville

Zip Codes in Clinton County, Ohio by Population (2024)