Make the most of the beautiful countryside surrounding Chicago by parking up at a campground outside the city limits. You can find one of the best RV parks near Chicago at Indiana Dunes State Park. Located an hour outside the city across the Indiana state line, this campground sits right on the edge of Lake Michigan within a 2,182-acre state park. Sites come with electric hookups with max amp support. You'll also have access to dump stations, showers, restrooms, and a convenience store. As this campground is within Indiana Dunes State Park, you'll get to laze around on 3 miles of sandy beaches, scale 200-foot-tall dunes, and hike through the wilderness on the 9-mile Calumet Trail.
If you'd prefer to stay at a campground with more onsite amenities, check out the Chicago Northwest KOA. Sites come with full hookups with max amp electricity. You'll find many useful amenities around the camp, including bathrooms, laundry services, free WiFi, and trails for walking your dog. There's never a dull moment at this campground either, with weekly organized events, a swimming pool, hay wagon rides, a mini-golf course, and many other activities. The KOA is only one hour from downtown Chicago, and you can always catch the Metra train from Woodstock or Crystal Lake if you don't fancy driving into the city.
Another popular Chicago RV campground worth considering is the Hollywood Casino Hotel & RV Resort. Advertized as the only casino in the Midwest with an RV park, this is the perfect place for high rollers to stay the night. It's worth noting that this campground is open seasonally between April and October. Pull-through and back-in sites are available and come with water and electrical hookups. Amenities include a dump station, laundry rooms, and bathrooms. Campers will get to enjoy complimentary WiFi and a hot breakfast, and there's a shuttle that will take you to and from the casino.