Blackberry Oaks Golf Club is an 18-hole public golf course in Oswego, Illinois, built in 1993 and designed by David Gill. It sits in the $$ (moderate) price range for golf in Illinois. The season runs Apr 1 to Nov 30. Tee times can be booked 7 days in advance. Guests are welcome.
Details like fees and seasons change, so call the course before you head out.