28,678 campgrounds
San Bernardino National Forest
Mt. Baker National Forest
Lassen National Forest
George Washington National Forest
Sabine National Forest
Jefferson National Forest
Challis National Forest
Okanogan National Forest
Nicolet National Forest
Cache National Forest
Umpqua National Forest
Cleveland National Forest
Whitman National Forest
Wallowa National Forest
Wasatch National Forest
Medicine Bow National Forest
Manistee National Forest
Willamette National Forest
