Campgrounds within United States national parks may be reserved by navigating to ReserveAmerica.com and then selecting a state, selecting a park from within a state's page, checking the availability, and then booking a campground. Alternatively, navigate to Recreation.gov, search for a state, select a campground, and then book a campground.
The National Recreation Reservation System serves as the reservation system for the USDA Forest Service, Army Corps of Engineers, National Park Service, Bureau of Land Management, Bureau of Reclamation, Boundary Waters Canoe Area Wilderness, United States Fish and Wildlife Service, and National Archives & Records Administration. The National Recreation Reservation System is the largest outdoor recreation reservation system in the country and hosts more than 45,000 facilities at over 1,700 locations in 44 states.
Recreation.gov does not cover the same amount of parks or campgrounds as the National Recreation Reservation System, but Recreation.gov does service campgrounds in some states that the National Recreation Reservation System does not, such as Hawaii. Both services allow users to book more activities than just camping, such as tours and cabin rental, but Recreation.gov also directs users to websites where they may purchase useful licenses such as hunting licenses, fishing licenses and off-highway vehicle permits.