28,319 campgrounds
Medicine Bow National Forest
Bighorn National Forest
Lyndon B. Johnson National Grassland
Beaverhead National Forest
Umatilla National Forest
Los Padres National Forest
Flathead National Forest
Challis National Forest
George Washington National Forest
Humboldt-Toiyabe National Forest
Rogue River National Forest
Siuslaw National Forest
Angeles National Forest
Cleveland National Forest
Ozark National Forest
Mt. Baker National Forest
Gifford Pinchot National Forest
Stanislaus National Forest
Apache National Forest
Humboldt National Forest
Willamette National Forest
Sequoia National Forest
Manistee National Forest
