| Great Smoky Mountains National Park | 11,527,939 |
| Zion National Park | 4,984,525 |
| Yellowstone National Park | 4,762,988 |
| Grand Canyon National Park | 4,430,653 |
| Yosemite National Park | 4,278,413 |
| Rocky Mountain National Park | 4,171,431 |
| Acadia National Park | 4,079,318 |
| Grand Teton National Park | 3,800,648 |
| Olympic National Park | 3,584,187 |
| Glacier National Park | 3,136,557 |
| Cuyahoga Valley National Park | 3,025,325 |
| Joshua Tree National Park | 2,932,644 |
| Hot Springs National Park | 2,494,611 |
| Bryce Canyon National Park | 1,967,367 |
| Hawaii Volcanoes National Park | 1,877,854 |
| Shenandoah National Park | 1,682,152 |
| Mount Rainier National Park | 1,635,342 |
| Arches National Park | 1,511,740 |
| Capitol Reef National Park | 1,388,476 |
| Death Valley National Park | 1,320,134 |
