Although first afforded Federal protection in 1893 as a Forest Reserve and later as a National Monument, Grand Canyon did not achieve National Park status until 1919, three years after the creation of the National Park Service. Today Grand Canyon National Park receives close to five million visitors each year - a far cry from the annual visitation of 44,173 which the park received in 1919.

The oldest human artifacts found are nearly 12,000 years old and date to the Paleo-Indian period. There has been continuous use and occupation of the park since that time.

The park has recorded over 4,300 archeological resources with an intensive survey of over 5% of the park area.