HUPA HOOPA : Click for CAHTO, EEL RIVER ATHABASKAN, or MATTOLE   Hupa Territory: Northern California. Hupa Divisions: Hupa, Whilkut, and Chilula.   Portals .   Hoopa Valley Tribe Hoopa, California #12 Hupa Population United States (2010) - 2,500 N A - D E N E