1,000 (Golla 2007), decreasing. Ethnic population: 5,940 (Golla 2007).
Wind River Reservation, Wyoming; also associated with Cheyenne in western Oklahoma.
Bilingual education efforts begun on Wind River Reservation in the 1980s. Arapaho Language Lodge established in 1993, a successful immersion program. Mostly 50 and older.
No L1 speakers in Oklahoma.