SANTIAM CENTRAL KALAPUYA : Click for TUALATIN or YONCALLA   Santiam Territory: Northwest Oregon. Santiam Divisions: Santiam, Ahantchuyuk, Luckiamute, Chepenafa, Chemapho, Tsankupi, Chelamela, and Winefelly.   Portals .   Confederated Tribes of Grand Ronde : part of whose membership is Santiam Grand Ronde, Oregon   Confederated Tribes of Siletz : part of whose membership is Santiam Siletz, Oregon #97 Santiam Population United States (2010) - 450 K A L A P U Y A N