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

Marion County is located in South Illinois. This cool county was named after Francis Marion (c. 1732-1795), general in the American Revolutionary War known as The Swamp Fox. The county seat of Marion County is Salem. The county's area is 572 square miles. Founded in 1823, today Marion County is home to 37 thousand Americans. 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.