Beloit is a village in southwestern Mahoning County, Ohio, United States. The population was 903 at the 2020 census. It is part of the Youngstown–Warren metropolitan area.

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.