L1 users: 100 (1997 H. Aoki), decreasing. Spoken fluently only by a handful of elders on Nez Perce and Colville Reservations. 30–40 semispeakers, mostly in Idaho (Golla 2007). Ethnic population: 610 (2000 census).
Idaho: Kamiah and Lapwai on Nez Perce Reservation; Washington: east on Colville Reservation (Upriver dialect). Oregon: Umatilla Reservation (Downriver dialect).
Downriver Nez Perce, Upriver Nez Perce.
Shifting to English [eng]. Older adults.
Latin script [Latn].