| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Yakama | 9,030 | Penutian | Plateau Penutian | |||
| ● Nez Perce | 3,120 | Penutian | Plateau Penutian | |||
| ● Tenino | 1,420 | Penutian | Plateau Penutian | |||
| ● Umatilla | 1,050 | Penutian | Plateau Penutian | |||
| ● Walla Walla | 1,010 | Penutian | Plateau Penutian |