Steubenville is a city in and the county seat of Jefferson County, Ohio, United States. Located along the Ohio River 33 mi west of Pittsburgh, it had a population of 18,161 at the 2020 census. The city's name is derived from Fort Steuben, a 1786 fort that sat within the city's current limits and was named for Prussian military officer Baron Friedrich Wilhelm von Steuben. It is a principal city of the Weirton–Steubenville metropolitan area, which had a 2020 population of 116,903 residents.