6,623,000 (2009 census), increasing.
Kiambu, Murang’a, Nyeri, and Kirinyaga counties; Nakuru county: Lake Naivasha area; Meru county; Nairobi.
SVO; 10 noun classes; no articles; verb affixes mark person, number; tense and aspect; 18 consonant and 14 vowel phonemes; tonal (2 tones: high, low).
Latin script [Latn].
Christian, traditional religion.