Alaska
- Kenai Fjords National Park
- Bortle 3
- Kobuk Valley National Park
- Bortle 4
Stargazing in United States
American Samoa
- National Park of American Samoa
- Bortle 3
Arizona
- Chiricahua National Monument
- Bortle 2
- Grand Canyon National Park
- Bortle 2
- Petrified Forest National Park
- Bortle 2
- Pipe Spring National Monument
- Bortle 3
- Kartchner Caverns State Park
- Bortle 4
- Oracle State Park
- Bortle 4
- Saguaro National Park
- Bortle 4
- Tonto National Monument
- Bortle 4
Arkansas
- Buffalo National River
- Bortle 4
- Hot Springs National Park
- Bortle 5
California
- Lassen Volcanic National Park
- Bortle 2
- Redwood National Park
- Bortle 2
- Death Valley National Park
- Bortle 3
- Kings Canyon National Park
- Bortle 3
- Yosemite National Park
- Bortle 3
- Anza-Borrego Desert State Park
- Bortle 4
- Channel Islands National Park
- Bortle 4
- Joshua Tree National Park
- Bortle 4
- Pinnacles National Park
- Bortle 4
- Sequoia National Park
- Bortle 4
Colorado
- Hovenweep National Monument
- Bortle 2
- Mesa Verde National Park
- Bortle 3
- Rocky Mountain National Park
- Bortle 4
Florida
- Dry Tortugas National Park
- Bortle 2
- Big Cypress National Preserve
- Bortle 4
- Everglades National Park
- Bortle 4
- Biscayne National Park
- Bortle 5
Georgia
- Stephen C. Foster State Park
- Bortle 4
Hawaii
- Haleakalā National Park
- Bortle 2
- Hawaiʻi Volcanoes National Park
- Bortle 3
Idaho
- Central Idaho Dark Sky Reserve
- Bortle 2
Illinois
Indiana
- Indiana Dunes National Park
- Bortle 5
- Potawatomi Wildlife Park
- Bortle 5
Kentucky
- Mammoth Cave National Park
- Bortle 4
Maine
- Acadia National Park
- Bortle 3
Michigan
- Isle Royale National Park
- Bortle 2
- Negwegon State Park
- Bortle 3
- The Headlands
- Bortle 3
- Thompson's Harbor State Park
- Bortle 3
Minnesota
- Voyageurs National Park
- Bortle 2
Missouri
- Gateway Arch National Park
- Bortle 7
Montana
- Glacier National Park
- Bortle 2
Nevada
- Great Basin National Park
- Bortle 2
New Mexico
- Clayton Lake State Park
- Bortle 2
- Cosmic Campground
- Bortle 2
- Fort Union National Monument
- Bortle 2
- El Morro National Monument
- Bortle 3
- Valles Caldera National Preserve
- Bortle 3
- Carlsbad Caverns National Park
- Bortle 4
- White Sands National Park
- Bortle 4
North Dakota
- Theodore Roosevelt National Park
- Bortle 3
Ohio
- Cuyahoga Valley National Park
- Bortle 6
Oregon
- Crater Lake National Park
- Bortle 2
Pennsylvania
- Cherry Springs State Park
- Bortle 4
South Carolina
- Congaree National Park
- Bortle 5
South Dakota
- Badlands National Park
- Bortle 2
- Wind Cave National Park
- Bortle 3
Tennessee
- Obed Wild and Scenic River
- Bortle 4
Texas
- Big Bend National Park
- Bortle 2
- Big Bend Ranch State Park
- Bortle 3
- Copper Breaks State Park
- Bortle 3
- Devils River State Natural Area
- Bortle 3
- South Llano River State Park
- Bortle 4
Utah
- Arches National Park
- Bortle 2
- Bryce Canyon National Park
- Bortle 2
- Canyonlands National Park
- Bortle 2
- Capitol Reef National Park
- Bortle 2
- Dead Horse Point State Park
- Bortle 2
- Dinosaur National Monument
- Bortle 2
- Goblin Valley State Park
- Bortle 2
- Goosenecks State Park
- Bortle 2
- Kodachrome Basin State Park
- Bortle 2
- Rainbow Bridge National Monument
- Bortle 2
- Cedar Breaks National Monument
- Bortle 3
- Zion National Park
- Bortle 3
- Rockport State Park
- Bortle 4
- Steinaker State Park
- Bortle 4
- Antelope Island State Park
- Bortle 5
- East Canyon State Park
- Bortle 5
- Weber County North Fork Park
- Bortle 5
Virginia
- James River State Park
- Bortle 4
- Shenandoah National Park
- Bortle 4
- Staunton River State Park
- Bortle 4
Washington
- North Cascades National Park
- Bortle 3
- Olympic National Park
- Bortle 3
- Mount Rainier National Park
- Bortle 4
Wisconsin
- Newport State Park
- Bortle 3
Wyoming
- Grand Teton National Park
- Bortle 2
- Yellowstone National Park
- Bortle 2
Other parks
- Virgin Islands National Park
- Bortle 4