Onitsha — UN urban centre population
Onitsha has a recorded base population of 5,627,706 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
Onitsha UN urban centre: 5,627,706 people (2025), equal to the displayed UN urban centre figure of 5,627,706. Separate GeoNames settlement record: 1,553,000; 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.
Comparable database records
Same definition label: UN urban centre. Dates/boundaries may still differ; this is not a harmonised international city ranking. Ratios use 5,627,706 as denominator.
| Place | Population | vs Onitsha |
|---|---|---|
| Kabul | 5,635,737 | +0.1% |
| Yangon | 5,618,303 | −0.2% |
| Accra | 5,592,780 | −0.6% |
| Madrid | 5,583,601 | −0.8% |
| Faisalabad | 5,566,382 | −1.1% |
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 (+2.38% per year). This anchor is a modelling convention, not an observed population date. Tiles, ranks and comparisons use the recorded base figure 5,627,706, 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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This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.