Main categories of camps in the United States:
National Park Camps: The location is undoubtedly the best national park, living in the attractions to deeply experience the integration of people and nature, some camps are very fully equipped with laundry, extra hot water bathroom WIFI and all other needs can be met. There are also very rudimentary camps with no water or electricity at all, so if you choose this, remember to prepare adequate supplies. Prices are generally cheap, $20-$40 a night, and a few will have $50.
Go to http://nps.gov can be booked
State Park Campgrounds: Like national parks, prices are generally cheap, about $20 to $30 a night, and need to be booked on the state's official websites.