Nairobi — UN urban centre population
Nairobi has a recorded base population of 6,134,334 for the UN urban centre definition (2025 annual estimate). UN DESA, World Urbanization Prospects 2025; the moving counter uses UN 2025–2026 annual growth, not new population observations.
At a glance
Separate UN urban-centre definition
Nairobi UN urban centre: 6,134,334 people (2025), equal to the displayed UN urban centre figure of 6,134,334. Separate GeoNames settlement record: 4,397,073; the UN value is larger (different boundaries; GeoNames population date unavailable). UN WUP 2025 Degree of Urbanisation; not a municipal/province boundary. Association: name/country/coordinates matched; boundary relationship unverified. No containment claim is made.
Administrative units of Nairobi
3 administrative records listed; completeness not established. 3 of 3 population values available; population values and dates not independently verified.
Available-value subtotal: 255,022; not a reconciled total. Shares use the displayed UN urban centre denominator 6,134,334; mixed/unknown dates are not comparable. An em dash means missing, not zero.
| Unit | Population | Share | Membership |
|---|---|---|---|
| Lang'ata | 172,569 | 2.81% | Not independently verified |
| Imara Daima Estate | 52,837 | 0.86% | Not independently verified |
| Pumwani | 29,616 | 0.48% | Not independently verified |
Comparable database records
Same definition label: UN urban centre. Dates/boundaries may still differ; this is not a harmonised international city ranking. Ratios use 6,134,334 as denominator.
| Place | Population | vs Nairobi |
|---|---|---|
| Chengdu | 6,139,874 | +0.1% |
| Kozhikode | 6,123,872 | −0.2% |
| Baghdad | 6,390,735 | +4.2% |
| Amman | 6,403,666 | +4.4% |
| Shenyang | 5,702,638 | −7.0% |
About these numbers
Source: UN DESA, World Urbanization Prospects 2025. Reference: 2025 annual estimate. Live method: exponential projection from modelling anchor 2025-01-01 using UN 2025–2026 annual growth (+1.80% per year). This anchor is a modelling convention, not an observed population date. Tiles, ranks and comparisons use the recorded base figure 6,134,334, not the ticking estimate. Country/world denominators are World Bank values and can differ in date and method from local/UN values. Ranks cover only records with the same definition label in this database, not all cities in the world.
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