28,760 campgrounds
Cache National Forest
Gallatin National Forest
Clearwater National Forest
Humboldt National Forest
Shasta-Trinity National Forest
Deschutes National Forest
Sitgreaves National Forest
Tahoe National Forest
Bighorn National Forest
Plumas National Forest
Mt. Hood National Forest
Jefferson National Forest
Deerlodge National Forest
Trinity National Forest
Winema National Forest
Roosevelt National Forest
Nezperce National Forest
Pike National Forest
