28,290 campgrounds
Gallatin National Forest
Humboldt-Toiyabe National Forest
Modoc National Forest
Okanogan National Forest
Cache National Forest
Eldorado National Forest
Arapaho National Forest
Humboldt National Forest
Deschutes National Forest
Nicolet National Forest
Deerlodge National Forest
Umatilla National Forest
Sierra National Forest
Ozark National Forest
Pike National Forest
Chattahoochee National Forest
Grand Mesa National Forest
Wasatch National Forest
Rogue River National Forest
Challis National Forest
