28,622 campgrounds
Jefferson National Forest
Mendocino National Forest
Lincoln National Forest
Shasta National Forest
Trinity National Forest
Malheur National Forest
Delta National Forest
Chattahoochee National Forest
Ozark National Forest
Umpqua National Forest
Coeur d'Alene National Forest
Uinta National Forest
Caribou National Forest
Klamath National Forest
Sierra National Forest
Nezperce National Forest
Rogue River National Forest
Snoqualmie National Forest
Kaibab National Forest
San Bernardino National Forest
