28,506 campgrounds
Cimarron National Grassland
Bighorn National Forest
Tongass National Forest
Okanogan-Wenatchee National Forest
Tonto National Forest
Sitgreaves National Forest
Okanogan National Forest
Gallatin National Forest
Clearwater National Forest
Humboldt National Forest
Shasta-Trinity National Forest
Deschutes National Forest
Tahoe National Forest
Plumas National Forest
Mt. Hood National Forest
Jefferson National Forest
Deerlodge National Forest
Trinity National Forest
Roosevelt National Forest
