Nairobi City County Guide (2026): Population, Sub-Counties, Wards, Services, and Key Facts About Kenya’s Capital
- BeyondForest
- 9 hours ago
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1.)Introduction to Nairobi City County
2.)Where Nairobi Is Located in Kenya
3.)Population of Nairobi City County
5.)The 17 Sub-Counties of Nairobi
6.)Wards in Nairobi City County
8.)Nairobi County Government and Administration
9.)Nairobi County Government Services
11.)Why Nairobi Is the Economic Capital of Kenya
13.)Frequently Asked Questions About Nairobi
Nairobi population estimated 5,767,000 people
Nairobi expected to exceed 10 million people by 2050.
Nairobi City County is the capital and largest urban center of Kenya and serves as the political, economic, and diplomatic hub of the country. Established as a county under Kenya’s 2010 Constitution, Nairobi functions both as a city and a county government with administrative responsibilities over local services and development.
Nairobi County Land size 696.1 km².
Nairobi Gikomba Outdoor market with people browsing colorful clothes
Covering approximately 696 square kilometers, Nairobi hosts millions of residents and continues to grow rapidly due to urbanization and economic opportunities. The city is internationally recognized for hosting major global institutions such as United Nations Environment Programme and United Nations Human Settlements Programme, making it one of Africa’s most influential metropolitan centers.
Nairobi hosts multiple UN headquarters (UNEP, UN-Habitat).
Nairobi Marikiti Market in Nairobi with a vendor sitting by baskets
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Nairobi is located in the south-central part of Kenya within the country’s highland region. The city sits at an elevation of about 1,795 meters above sea level, giving it a mild climate compared to many other African capitals. Geographically, Nairobi lies between three neighboring counties:
Nairobi has 85 wards and 17 constituencies.
Kiambu County to the north, Machakos County to the east, and Kajiado County to the south and southwest. Its central location and well-developed transport network make Nairobi the main gateway connecting Kenya to the rest of East Africa.
Population of Nairobi City County
Nairobi has over 20 universities and 50 tertiary colleges.
Busy urban street with people walking at Gikomba Market Nairobi
The population of Nairobi City County has grown rapidly over the past few decades, making it the largest urban center in Kenya and one of the fastest-growing cities in Africa. Current estimates place the population at over 5.7 million residents, driven by rural-to-urban migration, economic opportunities, and the city’s role as the country’s administrative and commercial capital.
Nairobi City County covers an area of approximately 696 square kilometers, making it one of the smallest counties in Kenya by land size but one of the most densely populated. Despite its relatively small geographic area, Nairobi accommodates millions of residents and extensive infrastructure including residential neighborhoods, commercial districts, industrial zones, and green spaces.
Sub-County | Major Areas |
Westlands | Parklands, Kangemi |
Dagoretti North | Kawangware |
Dagoretti South | Riruta |
Lang’ata | Karen, Nyayo Highrise |
Kibra | Kibera |
Roysambu | Zimmerman |
Kasarani | Mwiki |
Ruaraka | Baba Dogo |
Embakasi South | Pipeline |
Embakasi North | Kariobangi |
Embakasi Central | Kayole |
Embakasi East | Utawala |
Embakasi West | Umoja |
Makadara | Hamza |
Kamukunji | Eastleigh |
Starehe | CBD |
Mathare | Mlango Kubwa |
Wards in Nairobi City County
View from a balcony overlooking a busy city street at Eastleigh
Nairobi City County is divided into 85 electoral wards, which are the smallest administrative and political units within the county. Each ward is represented by a Member of the County Assembly (MCA) who is responsible for representing local residents in the Nairobi City County Assembly. The wards are distributed across the county’s 17 sub-counties, helping facilitate local governance, service delivery, and development planning within different neighborhoods of Nairobi.
Counties That Border Nairobi
Nairobi County is surrounded by three neighboring counties that form part of the larger Nairobi Metropolitan Region. To the north and northwest lies Kiambu County, known for its fast-growing suburbs and agricultural areas. To the east, Nairobi borders Machakos County, which includes expanding residential towns such as Athi River. To the south and southwest, the city borders Kajiado County, home to rapidly developing satellite towns like Kitengela and Ongata Rongai. These counties are closely linked to Nairobi through commuting, trade, and infrastructure networks.
Nairobi County Government and Administration
The Nairobi City County Government is responsible for managing local administration and delivering essential services within Nairobi. The county government is led by the Governor and supported by the County Executive Committee, which oversees various departments such as health, transport, trade, and urban planning. Legislative oversight is provided by the Nairobi City County Assembly, whose Members of County Assembly (MCAs) represent the county’s 85 wards and help pass laws and policies that guide Nairobi’s development.
Business Permits and Licensing – Issuing and renewing single business permits for businesses operating in Nairobi.
Parking Services – Managing daily parking payments and enforcement within the city.
Health Services – Running county hospitals, clinics, and public health programs.
Waste Collection and Sanitation – Managing garbage collection, environmental health, and sanitation programs.
Urban Planning and Development Approvals – Approving building plans, zoning, and construction permits.
Markets and Trade Services – Managing public markets, stalls, and trader licensing.
Fire and Emergency Services – Providing fire response and emergency rescue operations.
Public Housing and Urban Development – Overseeing affordable housing and city redevelopment initiatives.
The Nairobi City County Government provides an online portal that allows residents and businesses to conveniently access various county services digitally. Through the portal, users can pay for daily parking, apply for business permits, renew licenses, and settle county fees without visiting government offices. The system helps streamline service delivery, improve transparency, and reduce queues at physical offices in Nairobi.
Why Nairobi Is the Economic Capital of Kenya
Nairobi is considered the economic capital of Kenya because it hosts the country’s largest concentration of businesses, financial institutions, and multinational headquarters. Major banks, technology companies, and international organizations operate from the city, making it the center of commerce and innovation in East Africa. Nairobi is also home to the Nairobi Securities Exchange and several regional corporate headquarters. Its strategic location, modern infrastructure, and access to global markets make Nairobi a key hub for investment, trade, and entrepreneurship across the region.
Key Institutions Located in Nairobi
Nairobi hosts many important national, regional, and international institutions that make it one of Africa’s most influential cities. Some of the key institutions located in Nairobi include:
United Nations Office at Nairobi
United Nations Environment Programme
United Nations Human Settlements Programme
Parliament of Kenya
Central Bank of Kenya
Nairobi Securities Exchange
University of Nairobi
Kenya Medical Research Institute
Kenya Revenue Authority
Kenya National Bureau of Statistics
These institutions reinforce Nairobi’s role as the political, economic, research, and diplomatic center of Kenya and the wider East African region.
Frequently Asked Questions About Nairobi
Nairobi is both a city and a county. Under Kenya’s 2010 Constitution, Nairobi became one of the 47 counties while still functioning as the capital city of Kenya. The county government manages local services such as health, licensing, planning, and transport, while the national government runs state institutions located in the city.
How many sub-counties are in Nairobi?
Nairobi County has 17 sub-counties. These administrative units correspond to parliamentary constituencies and help manage local governance, development projects, and service delivery within the county.
What are the 17 sub-counties of Nairobi?
The 17 sub-counties of Nairobi include:
Westlands
Dagoretti North
Dagoretti South
Lang’ata
Kibra
Roysambu
Kasarani
Ruaraka
Embakasi South
Embakasi North
Embakasi Central
Embakasi East
Embakasi West
Makadara
Kamukunji
Starehe
Mathare
These sub-counties are further divided into 85 electoral wards.
What counties border Nairobi?
Nairobi County borders three other counties:
County | Direction |
Kiambu County | North and Northwest |
Machakos County | East |
Kajiado County | South and Southwest |
Nairobi’s population is estimated at over 5.7 million people, making it the largest urban center in East Africa. Rapid urbanization and economic opportunities continue to attract people from across Kenya and neighboring countries.
Nairobi County covers approximately 696 square kilometers, making it one of the smallest counties in Kenya by land area but one of the most densely populated.
Why is Nairobi important in Africa?
Nairobi is one of Africa’s most influential cities. It is a major economic, diplomatic, and transport hub in East Africa. The city hosts global institutions such as:
United Nations Environment Programme
United Nations Human Settlements Programme
These organizations make Nairobi the only city in the developing world hosting multiple UN headquarters.
What services does Nairobi County Government provide?
The Nairobi County Government provides various services to residents and businesses including:
business permits and licensing
daily parking management
health services and hospitals
waste collection and sanitation
urban planning and building approvals
markets and public facilities
Many of these services are accessible through the county’s online portal.
The Nairobi County online portal allows residents and businesses to pay for services such as parking fees, business permits, and other county charges digitally. It helps simplify payments and improve service delivery.
Why is Nairobi called the “Green City in the Sun”?
Nairobi earned the nickname “Green City in the Sun” because of its unique mix of modern urban development and green spaces such as parks, forests, and wildlife areas. The city even hosts the famous Nairobi National Park located just a few kilometers from the central business district.
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