28,770 campgrounds
Mendocino National Forest
Nezperce National Forest
Angeles National Forest
San Isabel National Forest
Siuslaw National Forest
Chattahoochee National Forest
Whitman National Forest
Wenatchee National Forest
San Bernardino National Forest
Wasatch National Forest
Humboldt-Toiyabe National Forest
Umatilla National Forest
Uncompahgre National Forest
Ottawa National Forest
Sierra National Forest
Challis National Forest
Jefferson National Forest
Snoqualmie National Forest
Cherokee National Forest
