28,284 campgrounds
Routt National Forest
George Washington National Forest
Medicine Bow National Forest
Bighorn National Forest
Lyndon B. Johnson National Grassland
Beaverhead National Forest
Umatilla National Forest
Flathead National Forest
Challis National Forest
Rogue River National Forest
Siuslaw National Forest
Angeles National Forest
Ozark National Forest
Gifford Pinchot National Forest
Apache National Forest
Manti-La Sal National Forest
Jefferson National Forest
Wenatchee National Forest
Willamette National Forest
Eldorado National Forest
Wallowa National Forest
Plumas National Forest
