Aba — UN urban centre
Aba: 1,428,069 people. Reference: 2025 annual estimate · World rank #355 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 7785; territory: Nigeria (NGA). UN source workbook.
Method: Degree of Urbanisation (contiguous 1 km2 cells, density 1,500+ people/km2, total 50,000+). This is a source-defined urban centre, not a municipality or province. No association with a separate administrative entity is inferred from proximity or name.
Source centroid: 5.1029, 7.3522. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 354,073 | Estimate |
| 1980 | 440,728 | Estimate |
| 1985 | 525,702 | Estimate |
| 1990 | 602,866 | Estimate |
| 1995 | 681,294 | Estimate |
| 2000 | 773,454 | Estimate |
| 2005 | 881,176 | Estimate |
| 2010 | 1,000,715 | Estimate |
| 2015 | 1,185,408 | Estimate |
| 2020 | 1,323,787 | Estimate |
| 2025 | 1,428,069 | Estimate |
| 2030 | 1,561,090 | Projection |
| 2035 | 1,712,729 | Projection |
| 2040 | 1,848,012 | Projection |
| 2045 | 2,000,433 | Projection |
| 2050 | 2,116,464 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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