Mahoning County
Click here to view a map of Mahoning County
Click here for the Mahoning County Census Profile (2024)
Mahoning County is located in northeastern Ohio, bordered by Trumbull County to the north, Columbiana County to the south, Portage and Stark Counties to the west, and Lawrence County, and the state of Pennsylvania to the east. As of the 2020 Census, the population was 228,614. The county seat is Youngstown. The county has a total area of approximately 407 square miles. The county is home to several small towns and villages, as well as the city of Youngstown. Mahoning County is home to several state and local parks, including the Mill Creek MetroParks, the Western Reserve Greenway, and the Lanterman's Mill. The county is also home to the Mahoning County District Library and the Canfield Fairgrounds.