Nairobi City County

Nairobi City County is one of the 47 Counties of Kenya and serves as the capital of Kenya. It is the most populous county as of the 2019 census with a population of 4,397,073, yet among the smallest in area at 696.1 km². Despite its small size, Nairobi County contributes approximately 27.5% of Kenya's Gross Domestic Product, making it the economic powerhouse of the nation.

The county was established on 4 March 2013 under Kenya's new constitution, replacing the former Nairobi Province administrative unit. It comprises 17 constituencies and 85 electoral wards, with 11 gazetted sub-counties for administrative purposes.

Nairobi was founded in 1899 as a supply depot and railway camp for the Uganda Railway, which was being constructed by the British colonial administration to connect Mombasa on the Indian Ocean coast to Uganda. The site was selected for its central location between Mombasa and Kampala, and for its network of rivers that could supply water to the camp. The name "Nairobi" derives from the Maasai phrase Enkare Nyrobi, meaning "place of cool waters," referring to the Nairobi River that flows through the area.

The initial settlement consisted of tents and basic structures housing approximately 5,000 railway workers, including European engineers, indentured Indian laborers, and African porters. The area was previously inhabited by the Maasai people, Akamba people, and Kikuyu people, who were displaced by colonial authorities.

In 1900, an outbreak of bubonic plague necessitated the burning and rebuilding of the original settlement, leading to more organized urban planning. By 1905, Nairobi had grown sufficiently to replace Machakos (then known as Masaku) as the capital of the East Africa Protectorate. The railway headquarters moved from Mombasa to Nairobi in 1901, establishing the city as a critical transport and administrative hub.

In 1919, Nairobi formally became a municipality as the Nairobi Municipal Council, with its boundaries extended to include surrounding settlements. The city attracted European settlers who were encouraged by British authorities to establish farms in the fertile highlands, with Nairobi serving as their commercial and administrative center. Urban development during this period was characterized by racial segregation, with Europeans occupying the northern and western areas (approximately 80% of residential land despite being only 10% of the population), Asians in central commercial areas, and Africans confined to overcrowded eastern and southern sectors.

In 1950, the city celebrated 50 years of local government, and petitioned King George VI for city status. The petition was granted, and on 30 March 1950, Prince Henry, Duke of Gloucester presented the Royal Charter elevating Nairobi to city status. The Kenya government simultaneously presented the city with a ceremonial mace.

The Mau Mau Uprising (1952-1960) significantly impacted Nairobi. Although the conflict was primarily rural, the city became a center for mass arrests of suspected Mau Mau supporters, particularly among the Kikuyu population. Operation Anvil in 1954 resulted in over 30,000 arrests in Nairobi alone, with 16,000 detained as active Mau Mau supporters.