Illinois State Route 37 is the main north-south surface highway in Pulaski County. It runs from the Alexander/Pulaski County Line to the Johnson/Pulaski County Line, via Mound City and New Grand Chain. IL St Rt 37 passes through the following towns in Pulaski County. Mound City
Olmsted New Grand Chain IL St Rt 37 is not multi-plexed in Pulaski County. IL St Rt 37 intersects the following highway in Pulaski County. Illinois State Route 169, near Karnak.
NB IL St Rt 37 at the Pulaski/Alexander County Line. A Pulaski County mile marker. NB IL St Rt 37 in Mound City.
