Established: June 29, 1938 Location: Washington Area: 922,651 acres Visitation (2017): 3,401,996 Visitation Increase Since 2000: 2.2% National Park Service Official Website
Established: December 9, 1962 Location: Arizona Area: 93,533 acres Visitation (2017): 627,757 Visitation Increase Since 2000: 3.7% National Park Service Official Website
Established: January 10, 2013 Location: California Area: 26,606 acres Visitation (2017): 233,334 Visitation Increase Since 2000: 43.9% National Park Service Official Website
