Some of the cities, towns, and places in Mahoning County are Alliance (part), Austintown, Beaver, Beloit, Berlin, Berlin Center, Blanco, Boardman, Calla, Campbell, Canfield, Coitsville, Coitsville Center, Columbiana (part), Craig Beach, Damascus (part), East Alliance, East Lewistown, Ellsworth, Fredericksburg, Garfield, Goshen, Green, Greenford, Hickory Corners, Jackson, Knaufville, Lake Milton, Locust Grove, Lowellville, Maple Ridge, Milton, Mineral Ridge (part), New Albany, New Buffalo, New Middletown, New Springfield, North Benton, North Jackson, North Lima, Ohltown, Paradise, Patmos, Petersburg, Poland, Poland Center, Rosemont, Salem (part), Sebring, Smith, Snodes, Springfield, Struthers, Washingtonville (part), West Austintown, Woodworth, Youngstown (part)
Mahoning County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 228,614. Its county seat and largest city is Youngstown. The county is named after the Mahoning River and was formed on March 1, 1846; the 83rd county in Ohio. Until 1846, the area that is now Mahoning County was part of Trumbull and Columbiana counties, when the counties in the area were redefined and Mahoning County emerged as a new county. Mahoning County is part of the Youngstown–Warren, OH Metropolitan Statistical Area.