Santa Cruz Island Scorpion Canyon Campground
Channel Islands National Park
$15/night
State Park
Schoodic Woods Campground
Acadia National Park
$22–60/night
State Park
Scoggins Wash (Southwest Desert)
Zion National Park
Free
State Park
Sea Camp Campground
Cumberland Island National Seashore
$22–40/night
State Park
Second Beach
Olympic National Park
Free
State Park
Shafer: Backcountry Campsite
Canyonlands National Park
Free
State Park
Sheep Camp Primitive Campground
Whiskeytown National Recreation Area
$20/night
State Park
Shenandoah NP Backcountry - Old Rag Summit
Shenandoah National Park
Free
National Park
Shi Shi Beach
Olympic National Park
Free
State Park
Shoshone Lake Backcountry Campsites
Yellowstone National Park
Free
State Park
Shumard Canyon Wilderness Campground
Guadalupe Mountains National Park
Free
State Park
Signal Mountain Campground
Grand Teton National Park
$44–88/night
State Park
Sinepuxent District Ranger Station/Campground Office
Assateague Island National Seashore
Free
State Park
Slough Creek Campground
Yellowstone National Park
$15/night
State Park
Smokemont Campground
Great Smoky Mountains National Park
$25/night
State Park
Snake Creek Campground - Primitive
Great Basin National Park
Free
State Park
Sol Duc Hot Springs Resort Campground
Olympic National Park
Free
State Park
South Beach Campground
Olympic National Park
$20/night
State Park
South Campground
Zion National Park
$20–50/night
State Park
South Maumee Camping Area
Buffalo National River
Free
State Park
South Rim 4 Loop Backpacking Site
Big Bend National Park
Free
State Park
Southwest Walk In
Lassen Volcanic National Park
$10–16/night
State Park
Spence Cabin
Great Smoky Mountains National Park
Free
State Park
Sperry Chalet Campground
Glacier National Park
Free
State Park