Illinois State Route 180 is a north-south highway in Eastern Knox County. This runs from Illinois State Route 17, near Galva, to U.S. Rt. 150, near Williamsfield. IL St Rt 180 passes through the following town in Knox County. Williamsfield
IL St Rt 180 is not multi-plexed in Knox County. IL St Rt 180 intersects the following highways in Knox County. Illinois State Route 17, near Galva.