Illinois State Route 54 runs in the west-central portion of Iroquois County. This is the northern most county that it passes thorugh. IL St Rt 54 passes through the following towns in Iroquois County. Ridgeville
IL St Rt 54 is not multi-plexed in Iroquois County. IL St Rt 54 intersects the following highways in Iroquois County. Interstate 57, near Onaraga. U.S. Rt. 45, at Onaraga.