Salem is a city in northern Columbiana County and extreme southern Mahoning County, Ohio, United States. At the 2000 census, the city's population was 12,197.
Salem is a principal city of the East Liverpool-Salem Micropolitan Statistical Area, which includes all of Columbiana County. The small portion of the city that extends into Mahoning County is considered part of the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area. Both of these are components of the Youngstown-Warren-East Liverpool, OH-PA Combined Statistical Area.
Salem is located at 40°54′3″N 80°51′10″W / 40.90083°N 80.85278°W / 40.90083; -80.85278 (40.900885, -80.852831).