29,559 campgrounds
Willamette National Forest
San Juan National Forest
Tahoe National Forest
Shoshone National Forest
Mt. Hood National Forest
Uinta National Forest
Wenatchee National Forest
Six Rivers National Forest
Sequoia National Forest
Ashley National Forest
Nantahala National Forest
Teton National Forest
Sierra National Forest
Nezperce National Forest
Rogue River National Forest
Clearwater National Forest
San Bernardino National Forest
Okanogan National Forest
