Boulder Campground is a national park campground at Carlyle Lake in Clinton County, Illinois. Reservations are managed through Recreation.gov. When a booked site here is cancelled it can vanish within minutes, so Campsite Tonight monitors it 24/7 and auto-adds the opening to your Recreation.gov cart before anyone else.
Boulder Campground is in very high demand — sites here routinely sell out well in advance. Cancellations are often the best way in, which is exactly what Campsite Tonight watches for.
The campground accommodates RVs and trailers up to 94 ft. Campers rate it 4.6/5 across 202 reviews.
Other campgrounds at Carlyle Lake include Boulder Day Use, Lotus Group Area, Coles Creek Campground, Coles Creek Day Use and Keyesport Rec. Area.
Total reservations in April — 2024: 226 · 2025: 229
Address
Carlyle, Illinois
Coordinates
38.6947, -89.2336
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.
Carlyle Lake
Carlyle Lake
Carlyle Lake
Carlyle Lake
Carlyle Lake
Carlyle Lake
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