KOA in Marengo might work for you. Not many chices in greater Chicagoland.
Joan and Bruce
05 Excursion 39L
powered by 350 KittyCATS on a Spartan
2010 Traverse LT toad (Blue Ox & Breakbuddy)
...and a "road dog" named Max and his gabby sister, Abby.
"May the wind be always at your back and your destination the one you chose"
Illinois Beach S.P. is probably your best bet. Campground reopened a couple of weeks ago. Pretty easy to get to Wheeling from there, straight shot down the tollway (294) or Milwaukee Ave. (41). Maybe 1/2 hr to 45 min depending on time of day & traffic.
The Long Grove Happy Campers -
Alex & Sandi (parental units)
Elizabeth, Eric, & Nicholas (the kids)
Riley, Greta, & Rikki (175 net pounds of canine chaos)
2003 Suburban K2500 6.0 L 3.73
2003 Dutchman 19T Sport