There are 9 zip codes in Ross County, Ohio. The most populated is 45601, located in Chillicothe. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4560156,300Chillicothe
456285,434Frankfort
456124,622Bainbridge
456444,525Kingston
431151,943Clarksburg
456811,480South Salem
45673423Richmond Dale
43101365Adelphi
456170Bourneville

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