Kenya, officially the Republic of Kenya, is a country in East Africa. With a population of more than 47.6 million in the 2019 census, Kenya is the 28th most populous country in the world and 7th most populous in Africa. Kenya's capital and largest city is Nairobi, while its oldest and second largest city, is the major port city of Mombasa, situated on Mombasa Island in the Indian Ocean and the surrounding mainland. Mombasa was the capital of the British East Africa Protectorate, which included most of what is now Kenya and southwestern Somalia, from 1889 to 1907. Other important cities include Kisumu and Nakuru. Kenya is bordered by South Sudan to the northwest, Ethiopia to the north, Somalia to the east, Uganda to the west, Tanzania to the south, and the Indian Ocean to the southeast. Kenya's geography, climate and population vary widely, ranging from cold snow-capped mountaintops with vast surrounding forests, wildlife and fertile agricultural regions to temperate climates in western and rift valley counties and further on to dry less fertile arid and semi-arid areas and absolute deserts.

Kisumu is the third-largest city in Kenya after the capital, Nairobi, and Mombasa. It is the second-largest city after Kampala in the Lake Victoria Basin. The city has a population of slightly over 600,000. The metro region, including Maseno and Ahero, has a population of 1,155,574 people according to the 2019 Kenya Population and Housing Census which was conducted by the Kenya National Bureau of Statistics.