842,000 in Kenya (2009 census), increasing. Population total all countries: 1,297,000.
Rift Valley Province, Kajiado and Narok districts.
Arusa (Arusha), Damat, Iloodokilani, Kaputiei, Keekonyokie, Kisonko, Kore, Laitokitok, Loitai, Matapo, Moitanik (Wuasinkishu), Parakuyo (Baraguyu, Kwavi), Purko, Siria. Arusha is distinct from Bantu Chaga-related variety. Reportedly Arusha, who are pastoralists, dress like Maasai and speak a Maasai-related variety; whereas, agriculturalists intermarry with the Chaga. Other sources say the Arusha originally spoke a Bantu language. Lexical similarity: 82%–86% between Kenya and Tanzania dialects. Purko has 91%–96% lexical similarity with other Kenya dialects, 82% with Baraguyu, 86% with Arusa, 77%–89% with Samburu [saq], 82%–89% with Chamus [saq], 60% with Ngasa [nsg] (Ongamo).
Latin script [Latn].
Seminomadic. Purko is the largest dialect in Kenya and centrally located. Traditional religion, Christian.