Nairobi Population 2026 capital
Nairobi has a population of 4,397,073, making it the #1 biggest city in 🇰🇪 Kenya, located in Nairobi County. Roughly 7.5% of Kenya's population lives here. Nairobi is the capital of Kenya.
Population (city proper)
4,397,073
Rank in Kenya
#1
Coordinates
1.28°S, 36.82°E
~1,684 m elevation · Africa/Nairobi
Other big cities in Nairobi County
| City | Population | Rank in Kenya |
|---|---|---|
| Thika | 251,407 | #9 |
Cities near Nairobi
FAQ
What is the population of Nairobi?
Nairobi has a population of 4,397,073 (city proper, latest official figure via GeoNames), making it the #1 biggest city in Kenya.
What region is Nairobi in?
Nairobi is located in Nairobi County, Kenya.
Is Nairobi the capital of Kenya?
Yes, Nairobi is the capital of Kenya.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.