L1 users: 1,090 (2010 census), decreasing. Ethnic population: 5,940 (Golla 2007).
Wyoming: Wind River Reservation; also associated with Cheyenne [chy] 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.
Latin script [Latn].
No L1 speakers in Oklahoma.