YAKAMA YAKIMA - CHANWAPPAN : Click for KITTITAS, KLICKITAT, or TAIDNAPAM   Yakama Territory: Southwest Washington State.   Portals .   Confederated Tribes and Bands of the Yakama Nation : part of whose membership are Yakama Toppenish, Washington   Yakama Population United States (2010) - 2,900 P E N U T I A N SAHAPTIN