Lowellville is a village in Mahoning County, Ohio, United States, in the "Steel Valley" area of the northeast part of the state, southeast of Youngstown. The village is an older, predominantly Italian-American, working-class community built along the banks of the Mahoning River, and centered on the once productive Sharon Steel works. The population was 1,155 at the 2010 census. It is part of the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area.