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.
Lowellville is located at 41°2′23″N 80°32′25″W (41.039592, -80.540165), and sits on the Pennsylvania-Ohio border, just west of Mahoningtown, Hillsville, and New Castle, Pennsylvania.
According to the United States Census Bureau, the village has a total area of 1.44 square miles (3.73 km2), of which 1.36 square miles (3.52 km2) is land and 0.08 square miles (0.21 km2) is water.
As of the census of 2010, there were 1,155 people, 472 households, and 302 families living in the village. The population density was 849.3 inhabitants per square mile (327.9/km2). There were 536 housing units at an average density of 394.1 per square mile (152.2/km2). The racial makeup of the village was 98.9% White, 0.3% African American, 0.1% Native American, 0.2% Asian, and 0.6% from two or more races. Hispanic or Latino of any race were 1.2% of the population.