28,701 campgrounds
Angeles National Forest
Sequoia National Forest
Ozark National Forest
Los Padres National Forest
Hiawatha National Forest
Kootenai National Forest
Mendocino National Forest
Gifford Pinchot National Forest
Stanislaus National Forest
Apache National Forest
Manti-La Sal National Forest
Jefferson National Forest
Wenatchee National Forest
Willamette National Forest
Eldorado National Forest
Arapaho National Forest
Wallowa National Forest
Plumas National Forest
Custer National Forest
Wasatch National Forest
Inyo National Forest
Challis National Forest
Salmon National Forest
