Washingtonville is a village in northern Columbiana and southern Mahoning counties in the U.S. state of Ohio. The population was 712 at the 2020 census. Southern Washingtonville is included in the Salem micropolitan area, while northern Washingtonville is part of the Youngstown–Warren metropolitan area.

Columbiana County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 101,877. The county seat is Lisbon and its largest city is Salem. Created in 1803, the county name is derived from that of 15th-century Italian explorer Christopher Columbus.