28,702 campgrounds
George Washington National Forest
Medicine Bow National Forest
Lassen National Forest
Bighorn National Forest
Lyndon B. Johnson National Grassland
Beaverhead National Forest
Umatilla National Forest
Bridger-Teton National Forest
San Bernardino National Forest
Custer National Forest
Flathead National Forest
Challis National Forest
Apache National Forest
Willamette National Forest
Sequoia National Forest
Rogue River National Forest
Siuslaw National Forest
Angeles National Forest
Ozark National Forest
Los Padres National Forest
Hiawatha National Forest
Kootenai National Forest
