Boulder Campground offers 82 electric campsites on the eastern shore of Carlyle Lake, 50 miles east of St. Louis, with modern amenities including flush toilets, showers, and drinking water.

The adjacent Boulder Day Use Area provides a boat ramp and fish cleaning station for water access. All sites are reservable via Recreation.

gov at $30/night, with check-in at 5:00 PM and check-out at 4:00 PM; the campground operates seasonally from mid-April through mid-October.