Toronto is a city in eastern Jefferson County, Ohio, located along the Ohio River 6 miles (9.7 km) northeast of Steubenville. The population was 5,303 at the time of the 2020 census, making it the second-largest city in Jefferson County. It is part of the Weirton–Steubenville metropolitan area.

Jefferson County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 65,249. Its county seat is Steubenville. The county is named for Thomas Jefferson, who was vice president at the time of its creation.