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Capital city · Kenya · Africa

Nairobi

Nairobi County · Kenya
City population
4,397,073
#1
in Kenya
#1
in Nairobi County
#73
worldwide
Nairobi
-1.283, 36.817
Share of Kenya
7.6%
Of the national population
Elevation
1,684 m
Approximate — modelled, not surveyed
Capital city
National
The capital of Kenya
Time zone
Africa/Nairobi
IANA zone identifier

About Nairobi

Nairobi is the capital and largest city of Kenya, with a metropolitan population of about 5 million. Located at 1,795 meters elevation on the edge of the East African highlands, Nairobi enjoys a pleasant climate despite its equatorial location. The city serves as East Africa's commercial, financial, and transport hub and is the only city in the world with a national park (Nairobi National Park) within its borders where wildlife roams freely.

Position in Kenya
#1of 119
LargestSmallest
Position in Nairobi County
#1of 3
LargestSmallest
Metro population
5,119,000
0.062% of world population
Archive estimate
Annual growth
+3.92%
Archive estimate
Density
7,355/km²
696 km² metro area

Key Facts

Country
Region
Nairobi County
Rank in region
#1of 3
Founded
1899
Leadership
Sakaja Johnson
Coordinates
-1.283, 36.817
Record updated
21 December 2023
Entry edited, not measured

City population, GeoNames. GeoNames publishes no year for its population figures, so “record updated” is when the entry was last edited — not the date the population was measured. Elevation is modelled from a digital elevation model rather than surveyed, so it is approximate.

Nearby Cities

All 119 in Kenya

Closest listed cities by great-circle distance from the city centre.

Compared with the World's Largest Cities

City-proper population against the fifteen largest cities in the dataset.

City-proper figures only. Administrative boundaries differ between countries, so these are not directly comparable to metropolitan-area estimates.
Nairobi compared with the fifteen largest cities
NameCity population
Shanghai24.9M
Beijing19M
Shenzhen17.5M
Guangzhou16.1M
Kinshasa16M
Istanbul15.7M
Lagos15.4M
Ho Chi Minh City14M
Chengdu13.6M
Lahore13M
Mumbai12.7M
São Paulo12.4M
Mexico City12.3M
Karachi11.6M
Tianjin11.1M
Nairobi4.4M

Airports

Scheduled-service airports within 100 km, nearest first.

  • Nairobi Wilson AirportWIL

    4 km from the city centre

  • Jomo Kenyatta International AirportNBO

    13 km from the city centre

Source: OurAirports, matched by distance.

History

Nairobi was founded in 1899 as a railway depot on the Uganda Railway. The name derives from Maasai 'Enkare Nairobi' meaning 'cool water.' It became Kenya's capital in 1907, replacing Mombasa. The city grew as a colonial administrative center and later as independent Kenya's capital from 1963. Nairobi has experienced rapid growth, particularly since the 1990s.

Economy

Nairobi is East Africa's business hub, hosting regional headquarters for the UN, international organizations, and multinational corporations. Key sectors include finance (Nairobi Securities Exchange), technology (iHub, 'Silicon Savannah'), tourism, manufacturing, and services. M-Pesa mobile money was developed here and transformed African finance. The informal sector (jua kali) employs many residents.

Culture

Nairobi is a cultural melting pot with over 40 Kenyan ethnic groups plus international residents. The city has a thriving arts scene, contemporary galleries, and music venues. Kenyan cuisine features nyama choma (grilled meat), ugali, and sukuma wiki. The craft beer scene is growing. Nairobi is known for marathon runners and athletics. Wildlife conservation centers dot the outskirts.

Transportation

Nairobi's traffic congestion (called 'jams') is severe. Matatus (decorated minibuses) are the primary public transport alongside conventional buses. The Standard Gauge Railway connects to Mombasa. Jomo Kenyatta International Airport is East Africa's busiest. Nairobi Expressway (2022) reduced CBD congestion. Ride-hailing apps like Uber and Bolt are popular. A BRT system is planned.

Current Challenges

Nairobi faces challenges including traffic congestion, informal settlements (Kibera is Africa's largest slum), water scarcity, crime and security concerns, waste management, and air pollution. Rapid population growth strains infrastructure. Wildlife-human conflict occurs as the city expands toward parklands. Climate change affects water supplies. Inequality between affluent suburbs and slums is stark.

Highlights

Landmarks & Attractions

  • Nairobi National Park
  • David Sheldrick Wildlife Trust
  • Giraffe Centre
  • Kenya National Museum
  • Kenyatta International Convention Centre
  • Karura Forest
  • Bomas of Kenya
  • Uhuru Gardens National Monument

What Nairobi Is Known For

  • Safari gateway
  • Wildlife
  • Tech innovation
  • M-Pesa
  • Coffee
  • Marathon runners

Universities

  • University of Nairobi
  • Kenyatta University
  • Strathmore University

Sports Teams

  • Gor Mahia FC (football)
  • AFC Leopards (football)

Interesting Facts

  • Nairobi National Park is the only national park within a capital city—lions with skyscrapers as backdrop
  • M-Pesa mobile money was invented in Nairobi and revolutionized African banking
  • The city hosts the only UN headquarters in the developing world (UNEP and UN-Habitat)
  • Nairobi is known as the 'Green City in the Sun'
  • Many of the world's best marathon runners train in Nairobi's high altitude
  • The Giraffe Centre lets visitors hand-feed endangered Rothschild giraffes

Population Trend in Kenya

No free source publishes city population back to 1950, so the parent country's series is shown instead.

020M40M60M80M100M1950197520002025205020752100projected →
This is Kenya's national population, not Nairobi's. Source: UN World Population Prospects 2024.
Kenya population, 1950 to 2100
YearPopulation
19505,769,185
19607,695,307
197011,368,791
198016,018,459
199022,892,651
200030,642,890
201041,598,567
202052,217,334
203063,102,245
204074,108,863
205083,593,239
206091,569,580
207097,825,655
2080101,743,624
2090103,764,128
2100104,195,500

Nairobi Population FAQ

What is the population of Nairobi?

Nairobi has a city population of 4,397,073. That is the population within the city's own boundary, not its wider metropolitan area. City population, GeoNames.

Where is Nairobi?

Nairobi is in Nairobi County, Kenya. Its coordinates are -1.283, 36.817.

How big is Nairobi compared with other cities in Kenya?

It is the 1st largest of the 119 cities listed in Kenya, holding 7.6% of the national population.

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