Nairobi ( ) is the
capital and largest city of
Kenya. The name is derived from the
Maasai phrase ''Enkare Nairobi'', which translates to "place of cool waters", a reference to the
Nairobi River which flows through the city. The
city proper had a population of 4,397,073 in the 2019 census, while the
metropolitan area
A metropolitan area or metro is a region that consists of a densely populated urban area, urban agglomeration and its surrounding territories sharing Industry (economics), industries, commercial areas, Transport infrastructure, transport net ...
has a projected population in 2022 of 10.8 million. The city is commonly referred to as the Green City in the Sun.
Nairobi was founded in 1899 by colonial authorities in
British East Africa, as a rail depot on the
Uganda -
Kenya Railway.
[Roger S. Greenway, Timothy M. Monsma, ''Cities: missions' new frontier'', (Baker Book House: 1989), p.163.] The town quickly grew to replace
Mombasa as the capital of Kenya in 1907. After independence in 1963, Nairobi became the capital of the
Republic of Kenya. During Kenya's colonial period, the city became a centre for the colony's
coffee
Coffee is a drink prepared from roasted coffee beans. Darkly colored, bitter, and slightly acidic, coffee has a stimulating effect on humans, primarily due to its caffeine content. It is the most popular hot drink in the world.
Seeds of ...
,
tea and
sisal industry. The city lies in the south central part of Kenya, at an elevation of .
Nairobi is home of the
Kenyan Parliament Buildings and hosts thousands of Kenyan businesses and over 1000 major international companies and organizations, including the
United Nations Environment Programme (UN Environment) and the
United Nations Office at Nairobi (UNON). Nairobi is an established hub for business and culture. The
Nairobi Securities Exchange (NSE) is one of the largest in Africa and the second-oldest exchange on the continent. It is Africa's fourth-largest exchange in terms of trading volume, capable of making 10 million trades a day. It also contains the
Nairobi National Park. Nairobi joined the
UNESCO
The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. I ...
Global Network of Learning Cities in 2010.
History
Early years

The site of Nairobi was originally part of an uninhabited
swamp
A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...
.
[Donald B. Freeman, City of Farmers: Informal Urban Agriculture in the Open Spaces of Nairobi, Kenya, McGill-Queen's Press - MQUP, 1 Mar 1991] The name Nairobi itself comes from the
Maasai expression meaning "cool waters", referring to the cold water stream which flowed through the area. With the arrival of the
Uganda Railway, the site was identified by
Sir George Whitehouse for a store depot, shunting ground and camping ground for the
Indian labourers working on the railway. Whitehouse, chief engineer of the railway, favoured the site as an ideal resting place due to its high elevation, temperate climate, adequate water supply and being situated before the steep ascent of the
Limuru escarpments.
[Anne-Marie Deisser, Mugwima Njuguna, Conservation of Natural and Cultural Heritage in Kenya, UCL Press, 7 Oct 2016, p.76] His choice was however criticised by officials within the
Protectorate government who felt the site was too flat, poorly drained and relatively infertile.

During the pre-colonial era, the people of modern Kenya mostly lived in villages amongst their tribes and cultural groups, where they had rulers within their communities rather than one singular government or leader.
In 1898, Arthur Church was commissioned to design the first town layout for the railway depot. It constituted two streets –
Victoria Street and
Station Street, ten avenues, staff quarters and an Indian commercial area.
The railway arrived at Nairobi on 30 May 1899, and soon Nairobi replaced Machakos as the headquarters of the provincial administration for Ukamba province. On the arrival of the railway, Whitehouse remarked that "Nairobi itself will in the course of the next two years become a large and flourishing place and already there are many applications for sites for hotels, shops and houses.
The town's early years were however beset with problems of
malaria
Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or deat ...
leading to at least one attempt to have the town moved. In the early 1900s, Bazaar Street (now Biashara Street) was completely rebuilt after an outbreak of
plague and the burning of the original town.
Between 1902 and 1910, the town's population rose from 5,000 to 16,000 and grew around
administration
Administration may refer to:
Management of organizations
* Management, the act of directing people towards accomplishing a goal
** Administrative Assistant, traditionally known as a Secretary, or also known as an administrative officer, administ ...
and tourism, initially in the form of
big game hunting.
[Sana Aiyar, Indians in Kenya: The Politics of Diaspora, Harvard University Press, 2015, p.42] In 1907, Nairobi replaced
Mombasa as the capital of the East Africa Protectorate. In 1908, a further outbreak of the plague led to Europeans concluding that the cause was unhygienic conditions in the Indian Bazaar. The government responded by restricting lower class Indians and African natives to specific quarters for residence and trade setting a precedent for racial segregation in the commercial sphere.
By the outset of the
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fig ...
, Nairobi was well established as a European settler colony through immigration and land alienation. In 1919, Nairobi was declared to be a municipality.
Growth
In 1921, Nairobi had 24,000 residents, of which 12,000 were native Africans.
[Garth Andrew Myers, Verandahs of Power: Colonialism and Space in Urban Africa, Syracuse University Press, 2003] The next decade saw growth in native African communities in Nairobi, and they began to constitute a majority for the first time.
This growth caused planning issues, described b
Thorntorn Whiteand his planning team as the "Nairobi Problem". In February 1926, colonial officer Eric Dutton passed through Nairobi on his way to
Mount Kenya
Mount Kenya (Kikuyu: ''Kĩrĩnyaga'', Kamba, ''Ki Nyaa'') is the highest mountain in Kenya and the second-highest in Africa, after Kilimanjaro. The highest peaks of the mountain are Batian (), Nelion () and Point Lenana (). Mount Kenya is locat ...
, and said of the city:
After
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, continuous expansion of the city angered both the indigenous
Maasai and
Kikuyu. This led to the
Mau Mau Uprising
The Mau Mau rebellion (1952–1960), also known as the Mau Mau uprising, Mau Mau revolt or Kenya Emergency, was a war in the British Kenya Colony (1920–1963) between the Kenya Land and Freedom Army (KLFA), also known as the ''Mau Mau'', an ...
in the 1950s, and the
Lancaster House Conferences, which initiated a transition to Kenyan independence in 1963.
In the spring of 1950, the
East African Trades Union Congress
East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth.
Etymology
As in other languages, the word is formed from the fac ...
(EAUTC) led a nine-day
general strike
A general strike refers to a strike action in which participants cease all economic activity, such as working, to strengthen the bargaining position of a trade union or achieve a common social or political goal. They are organised by large co ...
in the city.
Post independence

Nairobi remained capital of Kenya after independence, and its continued rapid growth put pressure on the city's infrastructure. Power cuts and
water shortages were a common occurrence.
On 11 September 1973, the
Kenyatta International Conference Centre KICC was open to the public. The 28-storey building at the time was designed by the Norwegian architect Karl Henrik Nøstvik and Kenyan David Mutiso. It is the only building within the city with a helipad that is open to the public. Of the buildings built in the Seventies, the KICC was the most eco-friendly and most environmentally conscious structure; its main frame was constructed with locally available materials gravel, sand, cement and wood, and it had wide open spaces which allowed for natural aeration and natural lighting. Cuboids made up the plenary hall, the tower consisted of a cylinder composed of several cuboids, and the amphitheater and helipad both resembled cones. The tower was built around a concrete core and it had no walls but glass windows, which allowed for maximum natural lighting. It had the largest halls in eastern and central Africa.
A years prior in 1972, the
World Bank approved funds for further expansion of the then Nairobi Airport (now
Jomo Kenyatta International Airport
Jomo Kenyatta International Airport , is an international airport in Nairobi, the capital of and largest city in Kenya. The other three important international airports in Kenya include the Kisumu International Airport,
Moi International A ...
), including a new international and domestic passenger terminal building, the airport's first dedicated cargo and freight terminal, new taxiways, associated aprons, internal roads, car parks, police and fire stations, a State Pavilion, airfield and roadway lighting, fire hydrant system, water, electrical, telecommunications and sewage systems, a dual carriageway passenger access road, security, drainage and the building of the main access road to the airport (Airport South Road). The total cost of the project was more than US$29 million (US$111.8 million in 2013 dollars).
On 14 March 1978, construction of the terminal building was completed on the other side of the airport's single runway and opened by President
Jomo Kenyatta
Jomo Kenyatta (22 August 1978) was a Kenyan anti-colonial activist and politician who governed Kenya as its Prime Minister from 1963 to 1964 and then as its first President from 1964 to his death in 1978. He was the country's first indigenous ...
less than five months before his death. The airport was renamed
Jomo Kenyatta International Airport
Jomo Kenyatta International Airport , is an international airport in Nairobi, the capital of and largest city in Kenya. The other three important international airports in Kenya include the Kisumu International Airport,
Moi International A ...
in memory of its first president.
The United States Embassy, then located in downtown Nairobi, was bombed in August 1998 by
Al-Qaeda
Al-Qaeda (; , ) is an Islamic extremism, Islamic extremist organization composed of Salafist jihadists. Its members are mostly composed of Arab, Arabs, but also include other peoples. Al-Qaeda has mounted attacks on civilian and military ta ...
and the
Egyptian Islamic Jihad, as one of a series of
US embassy bombings. It is now the site of a memorial park.
21st century

On 9 November 2012, President
Mwai Kibaki
Emilio Stanley Mwai Kibaki (15 November 1931 – 21 April 2022) was a Kenyan politician who served as the third President of Kenya from December 2002 until April 2013 and is regarded as one of Kenya's founding fathers.
He had previously ser ...
opened the KES 31 billion Thika Superhighway. This mega-project of Kenya started in 2009 and ended in 2011. It involved expanding the four-lane carriageway to eight lanes, building underpasses, providing interchanges at roundabouts, erecting flyovers and building underpasses to ease congestion. The 50.4-kilometre road was built in three phases: Uhuru Highway to Muthaiga Roundabout; Muthaiga Roundabout to
Kenyatta University and; Kenyatta University to
Thika Town.
On 31 May 2017, President
Uhuru Kenyatta
Uhuru Muigai Kenyatta (born 26 October 1961) is a Kenyan politician who served as the fourth president of Kenya from 2013 to 2022.
Kenyatta was chosen by Daniel Arap Moi as his preferred successor, but Kenyatta was defeated by opposition ...
inaugurated the Standard Gauge Railway which runs from Nairobi to Mombasa and vice versa. It was primarily built by a Chinese firm with about 90% of total funding from China and about 10% from the Kenyan government. A second phase is also being built which will link
Naivasha
Naivasha is a large town in Nakuru County, Kenya, lying by road north west of Nairobi.
Overview
The town has a total population of 198,444 (2019 census).
The main industry is agriculture, especially floriculture.
Naivasha is also a popular t ...
to the existing route and also the
Uganda border.
On 11 August 2020, Nairobi County Assembly Speaker
Beatrice Elachi resigned.
On 21 December 2020, recently elected Nairobi County Assembly Speaker Benson Mutura was sworn in as acting Nairobi Governor four days after the previous Nairobi Governor
Mike Sonko was impeached and removed from office.
At the time of Mutura's swearing in as acting Governor, which he will hold for at least 60 days, Nairobi did not have a Deputy Governor as well.
Historical population data for Nairobi
Geography

The city is situated at and and occupies .
Nairobi is situated between the cities of Kampala and Mombasa. As Nairobi is adjacent to the eastern edge of the
Rift Valley, minor earthquakes and tremors occasionally occur. The
Ngong Hills, located to the west of the city, are the most prominent geographical feature of the Nairobi area.
Mount Kenya
Mount Kenya (Kikuyu: ''Kĩrĩnyaga'', Kamba, ''Ki Nyaa'') is the highest mountain in Kenya and the second-highest in Africa, after Kilimanjaro. The highest peaks of the mountain are Batian (), Nelion () and Point Lenana (). Mount Kenya is locat ...
is situated north of Nairobi, and
Mount Kilimanjaro
Mount Kilimanjaro () is a dormant volcano in Tanzania. It has three volcanic cones: Kibo, Mawenzi, and Shira. It is the highest mountain in Africa and the highest free-standing mountain above sea level in the world: above sea level and ab ...
is towards the south-east.
The
Nairobi River and its
tributaries traverse through the Nairobi County and joins the larger River Athi on the eastern edge of the county.
Nobel Peace Prize laureate
Wangari Maathai fought fiercely to save the indigenous
Karura Forest in northern Nairobi which was under threat of being replaced by housing and other infrastructure.
Nairobi's western suburbs stretch all the way from the Kenyatta National Hospital in the south to the UN headquarters at Gigiri suburb in the north, a distance of about . The city is centred on the City Square, which is located in the Central Business District. The
Kenyan Parliament
The National Assembly of the Republic of Kenya is one of the two Houses of the Parliament of Kenya. Between 1966 and 2013, it served as a unicameral house. In 2013 ( 11th Parliament), it became the lower house when the Senate was reestablish ...
buildings, the
Holy Family Cathedral, Nairobi City Hall, Nairobi Law Courts, and the
Kenyatta Conference Centre all surround the square.
Climate
Under the
Köppen climate classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, nota ...
, Nairobi has a
subtropical highland climate (Cwb). At above sea level, evenings may be cool, especially in the June/July season, when the temperature can drop to . The sunniest and warmest part of the year is from December to March, when temperatures average in the mid-twenties
Celsius during the day. The mean maximum temperature for this period is .
There are rainy seasons, but rainfall can be moderate. The cloudiest part of the year is just after the first rainy season, when, until September, conditions are usually overcast with drizzle. As Nairobi is situated close to the equator, the differences between the seasons are minimal. The seasons are referred to as the
wet season and
dry season. The timing of sunrise and sunset varies little throughout the year for the same reason.
Districts and neighbourhoods

Nairobi is divided into a series of constituencies with each being represented by members of Parliament in the National Assembly. The initial constituencies before the 2010 constitution which led to the county electoral boundaries benig redrawn were: Makadara, Kamukunji, Starehe,
Langata, Dagoretti,
Westlands, Kasarani, and
Embakasi. The new electoral boundaries after this were revised to Embakasi North, Embakasi South, Embakasi Central, Embakasi East, Embakasi West, Makadara, Kamukunji, Starehe, Mathare, Westlands, Dagoretti North, Dagoretti South, Langata, Kibra, Ruaraka, Roysambu and Kasarani. The main administrative divisions of Nairobi are Central, Dagoretti,
Embakasi, Kasarani,
Kibera
Kibera (Kinubi: ''Forest'' or ''Jungle'') is a division of Nairobi Area, Kenya, and neighbourhood of the city of Nairobi, from the city centre. Kibera is the largest slum in Nairobi, and the largest urban slum in Africa.http://www.dominionpa ...
, Makadara, Pumwani, and
Westlands. Most of the upmarket suburbs are situated to the west and north-central of Nairobi, where most European settlers resided during the colonial times AKA 'Ubabini'. These include
Karen,
Langata,
Lavington,
Gigiri,
Muthaiga
Muthaiga is an affluent neighbourhood in the city of Nairobi. In 2019, media reports indicated that it was the most affluent and most expensive neighbourhood in the entire country.
Location
Muthaiga is located approximately , by road, north of ...
, Brookside, Spring Valley, Loresho,
Kilimani, Kileleshwa, Hurlingham,
Runda,
Kitisuru, Nyari, Kyuna,
Lower Kabete,
Westlands, and
Highridge, although Kangemi, Kawangware, and
Dagoretti are lower income areas close to these affluent suburbs. The city's colonial past is commemorated by many English place-names.
Most lower-middle and upper middle income neighbourhoods are located in the north-central areas such as Highridge, Parklands, Ngara, Pangani, and areas to the southwest and southeast of the metropolitan area near the Jomo Kenyatta International Airport. The most notable ones include Avenue Park, Fedha, Pipeline, Donholm, Greenfields, Nyayo, Taasia, Baraka, Nairobi West, Madaraka, Siwaka, South B, South C, Mugoya, Riverbank, Hazina, Buru Buru, Uhuru, Harambee Civil Servants', Akiba, Kimathi, Pioneer, and Koma Rock to the centre-east and Kasarani to northeast area among others. The low and lower income estates are located mainly in far eastern Nairobi. These include, Umoja, Kariokor,
Dandora,
Kariobangi,
Kayole,
Ruai,
Kamulu,
Embakasi, and
Huruma. Kitengela suburb, though located further southeast, Ongata Rongai and Kiserian further southwest, and Ngong/Embulbul suburbs also known as 'Diaspora' to the far west are considered part of the Greater Nairobi Metropolitan area. More than 90% of Nairobi residents work within the Nairobi Metropolitan area, in the formal and informal sectors. Many
Somali
Somali may refer to:
Horn of Africa
* Somalis, an inhabitant or ethnicity associated with Greater Somali Region
** Proto-Somali, the ancestors of modern Somalis
** Somali culture
** Somali cuisine
** Somali language, a Cushitic language
** Soma ...
immigrants have also settled in
Eastleigh, nicknamed "Little
Mogadishu".
Kibera slum

The
Kibera
Kibera (Kinubi: ''Forest'' or ''Jungle'') is a division of Nairobi Area, Kenya, and neighbourhood of the city of Nairobi, from the city centre. Kibera is the largest slum in Nairobi, and the largest urban slum in Africa.http://www.dominionpa ...
slum in Nairobi is claimed by the Kenyan government to have a population of 185,777. However, non-governmental sources generally estimate the slum to have a population of 500,000 to 1,000,000, depending on what areas are defined as comprising Kibera.
Parks and gardens

Nairobi has many parks and open spaces throughout the city. Much of the city has dense tree-cover and plenty of green spaces. The most famous park in Nairobi is
Uhuru Park. The park borders the central business district and the neighbourhood Upper Hill. Uhuru (''Freedom'' in
Swahili
Swahili may refer to:
* Swahili language, a Bantu language official in Kenya, Tanzania and Uganda and widely spoken in the African Great Lakes
* Swahili people, an ethnic group in East Africa
* Swahili culture
Swahili culture is the culture of ...
) Park is a centre for outdoor speeches, services, and rallies. The park was to be built over by former President
Daniel arap Moi
Daniel Toroitich arap Moi ( ; 2 September 1924 – 4 February 2020) was a Kenyan politician who served as the second president of Kenya from 1978 to 2002. He was the country's longest-serving president. Moi previously served as the third vice ...
, who wanted the 62-storey headquarters of his party, the
Kenya African National Union, situated in the park. However, the park was saved following a campaign by
Nobel Peace Prize winner
Wangari Maathai.
Central Park is adjacent to Uhuru Park, and includes a memorial for
Jomo Kenyatta
Jomo Kenyatta (22 August 1978) was a Kenyan anti-colonial activist and politician who governed Kenya as its Prime Minister from 1963 to 1964 and then as its first President from 1964 to his death in 1978. He was the country's first indigenous ...
, the first president of Kenya, and the Moi Monument, built in 1988 to commemorate the second president's first decade in power. Other notable open spaces include
Jeevanjee Gardens
Jeevanjee Gardens is an open garden in the Central Business District of Nairobi, Kenya.
Jeevanjee Gardens was founded by A.M. Jeevanjee, an Asian-born entrepreneur in Kenya. It is the only park in the city that is directly owned by the people, ...
, City Park,
7 August Memorial Park, and Nairobi Arboretum.
The colonial 1948 Master Plan for Nairobi still acts as the governing mechanism when it comes to making decisions related to urban planning. The Master Plan at the time, which was designed for 250,000 people, allocated 28% of Nairobi's land to public space, but because of rapid population growth, much of the vitality of public spaces within the city are increasingly threatened.
City Park, the only natural park in Nairobi, for example, was originally , but has since lost approximately of land to private development through squatting and illegal alienation which began in the 1980s.
Political divisions

The City of Nairobi enjoys the status of a full administrative County.
The Nairobi province differs in several ways from other Kenyan regions. The county is entirely urban. It has only one local council,
Nairobi City Council The City Council of Nairobi was the local authority governing the city of Nairobi, Kenya. It was the largest of the 175 local Authorities in the country and was under direction of the Ministry of Local Government.
The chief executive of the city co ...
. Nairobi Province was not divided into "districts" until 2007, when three districts were created. In 2010, along with the new constitution, Nairobi was renamed a county and consolidated into a
city-county
Nairobi County has 17 constituencies. Constituency name may differ from division name, such that Starehe Constituency is equal to Central Division, Lang'ata Constituency to Kibera division, and Kamukunji Constituency to Pumwani Division in terms of boundaries.
Constituencies

Nairobi is divided into 17
constituencies and 85
wards
Ward may refer to:
Division or unit
* Hospital ward, a hospital division, floor, or room set aside for a particular class or group of patients, for example the psychiatric ward
* Prison ward, a division of a penal institution such as a priso ...
,
mostly named after residential estates. Kibera Division, for example, includes
Kibera
Kibera (Kinubi: ''Forest'' or ''Jungle'') is a division of Nairobi Area, Kenya, and neighbourhood of the city of Nairobi, from the city centre. Kibera is the largest slum in Nairobi, and the largest urban slum in Africa.http://www.dominionpa ...
(Kenya's largest slum) as well as affluent estates of
Karen and
Langata.
Economy

Nairobi is home to the
Nairobi Securities Exchange (NSE), one of Africa's largest stock exchanges. The NSE was officially recognised as an overseas stock exchange by the
London Stock Exchange
London Stock Exchange (LSE) is a stock exchange in the City of London, England, United Kingdom. , the total market value of all companies trading on LSE was £3.9 trillion. Its current premises are situated in Paternoster Square close to St Pa ...
in 1953. The exchange is Africa's fourth largest in terms of trading volumes, and fifth largest in terms