Arrowhead Country Club is an 18-hole private golf course in Chillicothe, Illinois, built in 1960 and designed by William J. Spear. It sits in the $$ (moderate) price range for golf in Illinois. The season runs Apr 1 to Oct 31 (closed on Mondays). Tee times can be booked 2 days in advance. Play is generally limited to members and their guests.
Details like fees and seasons change, so call the course before you head out.