28,428 campgrounds
Black Hills National Forest
San Bernardino National Forest
Chattahoochee National Forest
Sitgreaves National Forest
Hiawatha National Forest
Apache National Forest
Gila National Forest
Wenatchee National Forest
Grand Mesa National Forest
Ashley National Forest
Willamette National Forest
Angeles National Forest
Tahoe National Forest
Crooked River National Grassland
Wallowa National Forest
Custer National Forest
Sequoia National Forest
Jefferson National Forest
Gallatin National Forest
Malheur National Forest
Deschutes National Forest
