Campgrounds and RV parks near Marengo, IL

Marengo sits in McHenry County in far northern Illinois, roughly an hour northwest of Chicago along the I-90 corridor. The area serves as a practical base for RV travelers who want quiet rural surroundings within reach of the metro. Lehman's Lakeside RV Resort is conveniently located between Chicago and Rockford, Illinois right off of Interstate I-90 at the Hampshire exit. Campgrounds in this corner of Illinois are almost entirely privately operated RV resorts rather than state park facilities. Lehman's Lakeside RV Resort is a full-service family-friendly destination sprawling across 65 acres near Marengo, with 295 campsites on all-paved roads, accommodating everything from big rigs to tents with pull-through and back-in options. Nearby options include Chicago Northwest KOA Holiday, NorthWoods RV Resort, Holiday Acres Camping Resort, and Pine Country RV and Camping Resort. The surrounding landscape is rolling farmland and small lakes, with the Kishwaukee River watershed and several McHenry County forest preserves within a short drive. Access is straightforward from I-90 and US 20, which makes arriving and departing with a rented RV manageable even for first-time drivers.

Private RV resorts near Marengo handle bookings directly through their own websites or by phone, and many also list availability through third-party platforms. Reserving early is important for summer weekends; premium full-hookup and lakeside sites can sell out weeks or months ahead at popular resorts. If a trip extends to an Illinois state park campground, reservations run through the state's ExploreMoreIL system. Online reservations for all Illinois Department of Natural Resources-hosted camping, cabins, group camps, and shelters can be made through the ExploreMoreIL website, and IDNR camping and shelter reservations will no longer be taken through the mail or over the phone. Campsites can be booked up to 180 days in advance and reservations must be made at least three days before arrival, with a maximum of 14 nights within a 30-day period, and certain holidays require a two-night minimum stay.