| Established | State(s) | National Park | % Correct |
|---|---|---|---|
| 3/1/1872 | Idaho, Montana, Wyoming | Yellowstone | 100%
|
| 10/1/1890 | California | Yosemite | 93%
|
| 5/11/1910 | Montana | Glacier | 76%
|
| 3/2/1899 | Washington | Mount Rainier | 75%
|
| 5/22/1902 | Oregon | Crater Lake | 74%
|
| 1/26/1915 | Colorado | Rocky Mountain | 74%
|
| 10/31/1994 | California, Nevada | Death Valley | 72%
|
| 9/25/1890 | California | Sequoia | 72%
|
| 10/31/1994 | California | Joshua Tree | 69%
|
| 8/1/1916 | Hawaii | Hawaiʻi Volcanoes | 66%
|
| 10/11/2000 | Ohio | Cuyahoga Valley | 60%
|
| 2/22/2018 | Missouri | Gateway Arch | 60%
|
| 2/15/2019 | Indiana | Indiana Dunes | 60%
|
| 6/29/1906 | Colorado | Mesa Verde | 59%
|
| 12/20/2019 | New Mexico | White Sands | 57%
|
| 10/21/1999 | Colorado | Black Canyon of the Gunnison | 55%
|
| 1/9/1903 | South Dakota | Wind Cave | 54%
|
| 9/13/2004 | Colorado | Great Sand Dunes | 53%
|
| 11/10/2003 | South Carolina | Congaree | 52%
|
| 12/27/2020 | West Virginia | New River Gorge | 50%
|
| 1/10/2013 | California | Pinnacles | 50%
|