The first national park, Yellowstone, was established in 1872 by President Grant. On August 25, 1916, recognizing the importance of national parks, President Wilson signed an act to create the National Park Service, responsible for managing the national parks and monuments. Today, there are 63 national parks in the United States.
The first list below show the national parks alphabetically, along with which state each park is in. The second list shows the national parks by state, order by the number of national parks that state has.