US Forest Service · Illinois campground guide
The numbers
Fee range
$14–$18/night
Season open
April through November
RV size limit
Up to 30 ft
Reservation window
6 months ahead via Recreation.gov
The insider read
Spring snake migration — IL Route 3 closes for the snakes to cross from limestone bluffs to LaRue swamp (March-April + Sept-Oct). Unique-fish wildlife event; rangers run education walks weekends.
Original analysis from PickRV — synthesised from public sources you can verify, pulling the operational details competitor guides typically skip.
Verify at fs.usda.govOn site
Book it right
PickRV doesn't handle campground bookings — reserve direct through the official channel so policies and cancellations flow through one record.
Opens recreation.gov
Every fact above is sourced from the managing agency's canonical page. Cross-check fee, season, and size limit before you depend on them.
Match the campground's size limit and hookup level to a vehicle category, then plan the rest of the trip.
Keep exploring
Near Zion
StateInsider tip · Only major Lake Michigan beach in Illinois. 6.5 miles of shoreline. Closest Lake Michigan camp to Chicago (60 min). Coal smell from nearby Zion plant fades after 2017 closure.
Near Spring Grove
StateInsider tip · 10 connected lakes — Illinois's largest interconnected waterway. Boat rentals at the marina; weekend traffic on the chain is heavy summer. Class A loop has the longest sites for big rigs.
Near Grafton
StateInsider tip · Illinois River + Mississippi confluence — bald eagles winter (Dec-Feb) on the bluffs. The lodge serves Sunday family-style fried chicken — only state-park restaurant of its caliber in Illinois.
Near Benton
COEInsider tip · Largest USACE camp in southern Illinois. Rend Lake bass-tournament traffic March-May; book the family-quiet weekends June-July. USACE Senior Pass halves the fee — apply at gate not online.
Your next step
Pine Hills Campground (Shawnee NF) takes rigs up to 30 ft, so what you arrive in decides whether the loop works at all. If you don't own one, the same trip runs on a motorhome rented in Illinois.
Nothing in Illinois is bookable today. Dated requests are what we take to owners, so give us the window you actually want — you get one email the day a rig covers it, and nothing else.
Nearby & related
Sourced costs, campground directories, and the places worth a detour — the next layer of Illinois trip planning.
Before you go
Illinois rules
Verified 2026-05-10
