Weirton is a city in Hancock and Brooke counties in the U.S. state of West Virginia. Located along the Ohio River in the state's Northern Panhandle, the city's population was 19,163 as of the 2020 census, making it the seventh most populous city in the state. Weirton was established in 1947 after the consolidation of various small towns in the vicinity of the Weirton Steel Corporation, founded by Ernest T. Weir in 1909.