28,678 campgrounds
Trinity National Forest
Kisatchie National Forest
Caribou National Forest
Eldorado National Forest
Wasatch National Forest
Mt. Baker National Forest
Sierra National Forest
Sumter National Forest
Gallatin National Forest
Plumas National Forest
Shoshone National Forest
Challis National Forest
Willamette National Forest
Jefferson National Forest
Cache National Forest
Uncompahgre National Forest
Mt. Hood National Forest
St. Joe National Forest
Colville National Forest
Wenatchee National Forest
Okanogan-Wenatchee National Forest
Bridger-Teton National Forest
