28,759 campgrounds
Caddo National Grassland
Bighorn National Forest
Pike National Forest
Umatilla National Forest
Sumter National Forest
Manistee National Forest
Challis National Forest
Rogue River National Forest
Deschutes National Forest
Snoqualmie National Forest
Tahoe National Forest
Umpqua National Forest
White Mountain National Forest
Clearwater National Forest
Plumas National Forest
Custer National Forest
Lewis & Clark National Forest
Cimarron National Grassland
Siuslaw National Forest
