Kootenai

Kootenai (Kutenai, Ktunaxa) is spoken in Canada, in southeastern British Columbia, and in the United States in northern Idaho and northwestern Montana.
Kootenai is a language isolate, not related to any other known language. It is critically endangered, with only a few dozen fluent speakers, but the Ktunaxa Nation has an active language program, online dictionaries, and classes.