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

Monroe County is located in the southern part of Illinois. This remarkable county was named after James Monroe (1758-1831), fifth President of the United States. The county seat of Monroe County is Waterloo. The county's area is 385 square miles. Established in 1816, today Monroe County is home to 35 thousand americans. This map shows the borders of Monroe 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 Monroe County.