598,000 (2009 census), increasing. Idakho 171,000; Isukha 217,000; Tiriki 210,000 (2009 census).
Kakamega, Bungoma, and Nandi counties.
Home, community, religious services. All ages. Positive attitudes. High comprehension of all Oluluyia [luy] dialects but due to a few lexical and phonological differences they do not use it. Otherwise it would be standardized and thus 1 language.
Latin script [Latn].