Marion County
Click here to view a map of Marion County
Click here for the Marion County Census Profile (2024)
Marion County is located in north central Ohio, bordered by Wyandot and Crawford Counties to the north, Morrow County to the east, Delaware County to the south, and Hardin and Union Counties to the west. As of the 2020 Census, the population was 65,359. The county seat is Marion. The county has a total area of approximately 422 square miles. The county is home to several small towns and villages, including Caledonia, Edison, Green Camp, and Marion. The county is predominantly rural, with agriculture and manufacturing being the main industries. Marion County is home to several state and local parks, including the Marion County Park District, the Marion Tallgrass Trail, and the Wyandot Indian Memorial. The county is also home to the Marion Public Library and the Marion County Fairgrounds.