By Mail

Grand Canyon National Park

P.O. Box 129

Grand Canyon, AZ 86023

By Phone

General Visitor Information: (928) 638-7888 Backcountry Information Center: (928) 638-7875 between 1 pm and 5 pm Monday through Friday, except on federal holidays River Permits Office: (800) 959-9164 or (928) 638-7843

By Fax

Main Fax Number: (928) 638-7797 Backcountry Information Center: (928) 638-2125 River Permit Office: (928) 638-7844

By Email