28,420 campgrounds
Snoqualmie National Forest
Tahoe National Forest
Willamette National Forest
Challis National Forest
San Bernardino National Forest
San Juan National Forest
Medicine Bow National Forest
Chattahoochee National Forest
Francis Marion National Forest
Klamath National Forest
Little Missouri National Grassland
Bridger-Teton National Forest
Wenatchee National Forest
Modoc National Forest
Sumter National Forest
Pike National Forest
Ozark National Forest
Nezperce National Forest
Kaniksu National Forest
Wallowa National Forest
