28,142 campgrounds
Siskiyou National Forest
Angeles National Forest
San Isabel National Forest
Manistee National Forest
Medicine Bow National Forest
Chattahoochee National Forest
Oconee National Forest
Sumter National Forest
Wenatchee National Forest
Plumas National Forest
Shasta-Trinity National Forest
Shasta National Forest
Lolo National Forest
Sequoia National Forest
Sitgreaves National Forest
Modoc National Forest
Payette National Forest
Lyndon B. Johnson National Grassland
Toiyabe National Forest
Umpqua National Forest
Cache National Forest
