Illinois State Route 4 is a north-south highway in Southwestern Perry County. This runs from the Jackson/Perry County Line to the Randolph/Perry County Line. IL St Rt 4 passes through the following town in Perry County. Willisville
IL St Rt 4 is multi-plexed in Perry County. Illinois State Route 150, at the Perry/Randolph County Line. IL St Rt 4 intersects the following highways in Perry County. Illinois State Route 150, near Percy.
NB IL St Rt 4 at the Jackson/Perry County Line. A Perry County mile marker. NB IL St Rt 4 south of IL St Rt 150.
