28,601 campgrounds
Okanogan National Forest
Umpqua National Forest
Plumas National Forest
Lewis & Clark National Forest
Medicine Bow National Forest
Wallowa National Forest
Toiyabe National Forest
Chequamegon National Forest
Snoqualmie National Forest
Tahoe National Forest
Willamette National Forest
Challis National Forest
Shasta National Forest
San Bernardino National Forest
San Juan National Forest
Stanislaus National Forest
Chattahoochee National Forest
Francis Marion National Forest
Klamath National Forest
Little Missouri National Grassland
Bridger-Teton National Forest
