29,559 campgrounds
Cimarron National Grassland
Sierra National Forest
Wenatchee National Forest
Coconino National Forest
Uinta National Forest
Uinta-Wasatch-Cache National Forest
Shasta-Trinity National Forest
San Bernardino National Forest
Mark Twain National Forest
Humboldt-Toiyabe National Forest
White River National Forest
Wasatch National Forest
Fremont National Forest
Kaniksu National Forest
Mt. Baker National Forest
Uncompahgre National Forest
Gallatin National Forest
Beaverhead National Forest
San Isabel National Forest
Bridger-Teton National Forest
