There are two official languages (English and Swahili) and one national language (Swahili) but most residents in rural areas only speak their native languages, which are about 70.  Kikuyu, Luo, Luhya, Kamba and Kalenjin ethnic groups account for 70% of the nation’s total population (University of Pennsylvania, 2019). The majority of the residents in cities and town centers speak the national language (Swahili) which is spoken in several other countries such as Tanzania, Burundi, Uganda, and Zaire.

References:

University of Pennsylvania. (2019). Kenya Ethnic Groups. https://www.africa.upenn.edu/NEH/kethnic.htm