Hamilton County, Ohio

Hamilton County is a county located in the southwest corner of the U.S. state of Ohio. As of the 2010 census, the population was 802,374. making it the third-most populous county in Ohio. The county seat is Cincinnati. The county is named for the first Secretary of the Treasury, Alexander Hamilton.Hamilton County is part of the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area.HistoryMost of Hamilton County was originally owned and surveyed by John Cleves Symmes, and the region was a part of the Symmes Purchase. The first settlers rafted down the Ohio River in 1788 following the American Revolutionary War. They established the towns of Losantiville (later Cincinnati) and Cleves.Hamilton County was organized in 1790, as the second county in the Northwest Territory. Its area then included about one-eighth of Ohio, and had about 2,000 inhabitants (not including the remaining Native Americans). The United States persuaded most of the Shawnee and other Indian peoples to remove in the 1820s to locations west of the Mississippi River.