Ethnic Group Kikuyu The Kikuyu are the largest single ethnic tribe in Kenya, making up 22% of the country's population. It is believed that the Kikuyu people migrated from Lake Chad to East Africa in 1000 AD, settling in the fertile central highlands of Kenya and engaging in farming. Few but definitions not freely available Kikuyu Ethnic Group Request inclusion into relevant ontology, possibly below "Ethnic Group" in NCIT? Demographic and Health Surveys Program (2015)