The African peoples of Kenya, who constitute virtually the entire population, are divided into three language groups: Bantu, Nilo-Saharan, and Afro-Asiatic. Bantu is by far the largest, and its speakers are mainly concentrated in the southern third of the country. The Kikuyu, Kamba, Meru, and Nyika peoples occupy the fertile Central Rift highlands, while the Luhya and Gusii inhabit the Lake Victoria basin.