28,701 campgrounds
Shasta-Trinity National Forest
Wallowa National Forest
Modoc National Forest
San Isabel National Forest
Roosevelt National Forest
Lassen National Forest
Bridger-Teton National Forest
Toiyabe National Forest
Tongass National Forest
Sequoia National Forest
Eldorado National Forest
Stanislaus National Forest
Gallatin National Forest
Siskiyou National Forest
Chattahoochee National Forest
Challis National Forest
Dixie National Forest
Ozark National Forest
San Bernardino National Forest
Custer National Forest
Wasatch National Forest
