L1 users: 237,000 (2009 census), increasing. Ilchamus 27,300, Njemps 5,300 (2009 census).
Isiolo, Marsabit, and Samburu counties: Lake Turkana east towards Marsabit.
Latin script [Latn].
Nomadic. There is some question as to whether Chamus (Ilchamus) is a dialect of Samburu or a separate language. Traditional religion, Christian.