Marion County on the map of Ohio 2024. Cities, roads, borders and directions in Marion County of Ohio.

Marion County is placed in the central zone of Ohio. This glorious county was named after General Francis Marion (1732-1795), lieutenant colonel in the Continental Army and later brigadier general in the American Revolutionary War. The total population of Marion County exceeds 65 thousand people. The county, formed on Apr 1, 1820 as a part of Delaware County, covers an area of 403.84 square miles. The county seat of Marion County is Marion. This map shows the borders of Marion County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Marion County.