About the town » Chillicothe, Ross County, Ohio, United States

Chillicothe is a city in and the county seat of Ross County, Ohio, United States. It is a part of Greater Columbus Metropolitan Area. The population was 21,901 at the 2010 census. It is the only city in Ross County and the center of the Chillicothe Micropolitan Statistical Area (as defined by the United States Census Bureau in 2003). Chillicothe is a designated Tree City USA by the National Arbor Day Foundation.