Butler County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 368,130. Its county seat is Hamilton. It is named for General Richard Butler, who died in 1791 during St. Clair's Defeat. It is also home to Miami University, an Ohio public university.
Butler County is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area.
- Butler County, Ohio on Wikipedia