Boulder Campground
Sold out? Sites at Boulder Campground open up when campers cancel.
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About Boulder Campground
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
Location
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.
- •June sees 627 reservations - book early or set cancellation alerts.
Nearby Campgrounds
Boulder Day Use
Carlyle Lake
Lotus Group Area
Carlyle Lake
Coles Creek Campground
Carlyle Lake
Coles Creek Day Use
Carlyle Lake
Keyesport Rec. Area
Carlyle Lake
Dam East Rec. Area (day Use)
Carlyle Lake
Photos
Boulder Campground FAQ
How far in advance should I book Boulder Campground?
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open. Mark your calendar for when the booking window opens (typically 5-6 months ahead). Also set alerts - cancellations do happen.
What is the busiest time at Boulder Campground?
June typically sees the highest reservation activity at Boulder Campground. During peak times, 100% of reservations are made 2+ weeks in advance.
Are there campsites available at Boulder Campground right now?
Boulder Campground is currently fully booked for the next 14 days. However, cancellations happen frequently - download the Campsite Tonight app to get instant alerts when sites become available.
Where is Boulder Campground located?
Boulder Campground is located in Carlyle Lake, near Carlyle, Illinois.
Track Availability at Boulder Campground
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