According to the CIA World Fact Book, ethnic groups in the nation are represented as follows: Kikuyu 22%, Luhya 14%, Luo 13%, Kalenjin 12%, Kamba 11%, Kisii 6%, Meru 6%, other African 15%, non-African (Asian, European, and Arab) 1%.

The country has a young population, with 73% of residents aged below 30 years because of rapid population growth; from 2.9 million to 40 million inhabitants over the last century.

Kenya's various ethnic groups typically speak their mother tongues within their own communities. The two official languages, English and Swahili, are used in varying degrees of fluency for communication with other populations. English is widely spoken in commerce, schooling and government.

 Peri-urban and rural dwellers are less multilingual, with many in rural areas speaking only their native languages.British English is primarily used in the country. Additionally, a distinct local dialect, Kenyan English, is used by some communities and individuals in the country, and contains features unique to it that were derived from local Bantu languages, such as Swahili and Kikuyu.

 It has been developing since colonisation and also contains certain elements of American English. Sheng is a Swahili-based cant spoken in some urban areas. Primarily consisting of a mixture of Swahili and English, it is an example of linguistic code-switching.

According to Ethnologue, there are a total of 69 languages spoken in Kenya. Most belong to two broad language families: Niger-Congo (Bantu branch) and Nilo-Saharan (Nilotic branch), spoken by the country's Bantu and Nilotic populations, respectively. The Cushitic and Arab ethnic minorities speak languages belonging to the separate Afro-Asiatic family, with the Indian and European residents speaking languages from the Indo-European family.

In addition, Kenya's capital, Nairobi, is home to Kibera, one of the world's largest slums. The shanty town is believed to house between 170,000 and 1 million locals. The UNHCR base in Dadaab in the north also currently houses around 500,000 people.

Kenya's various ethnic groups typically speak their mother tongues within their own communities. The two official languages, English and Swahili, are used in varying degrees of fluency for communication with other populations. English is widely spoken in commerce, schooling and government. Peri-urban and rural dwellers are less multilingual, with many in rural areas speaking only their native languages.

According to Ethnologue, there are a total of 69 languages spoken in Kenya. Most belong to two broad language families: Niger-Congo (Bantu branch) and Nilo-Saharan (Nilotic branch), spoken by the country's Bantu and Nilotic populations, respectively. The Cushitic and Arab ethnic minorities speak languages belonging to the separate Afro-Asiatic family, with the Indian and European residents speaking languages from the Indo-European family.