Martins Ferry is the most populous city in Belmont County, Ohio, United States. The population was 6,260 as of the 2020 census. Located along the Ohio River across from Wheeling, West Virginia, it is
Belmont County is a county located in the eastern end of the U.S. state of Ohio. As of the 2020 United States census, the population was 66,497. Its county seat is St. Clairsville, while its largest c