Mombasa
181 km²
Nairobi
598 km²
City Map Compare/Mombasa vs Nairobivs
vs
5 km
Nairobi covers 598 km² of contiguous built-up land, 3.3× the built-up area of Mombasa (181 km²).
| Mombasa | Nairobi | |
|---|---|---|
| Urban area | Mombasa | Nairobi |
| Population (2025) | 1.62 million | 6.65 million |
| Built-up area | 181 km² | 598 km² |
| Density | 8,938 /km² | 11,114 /km² |
Urban area = contiguous built-up land and the people living in it in 2025, drawn the same way for every city regardless of administrative boundaries. Source: GHSL Urban Centre Database R2024A, European Commission, Joint Research Centre (CC BY 4.0); some names adjusted to the city names people use, and country attribution follows the dataset.