Biu — UN urban centre
Biu: 220,703 people. Reference: 2025 annual estimate · World rank #2,677 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 8816; 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: 10.6145, 12.1874. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 68,618 | Estimate |
| 1980 | 74,977 | Estimate |
| 1985 | 80,059 | Estimate |
| 1990 | 87,895 | Estimate |
| 1995 | 96,824 | Estimate |
| 2000 | 120,090 | Estimate |
| 2005 | 139,916 | Estimate |
| 2010 | 163,526 | Estimate |
| 2015 | 186,283 | Estimate |
| 2020 | 204,110 | Estimate |
| 2025 | 220,703 | Estimate |
| 2030 | 239,123 | Projection |
| 2035 | 253,415 | Projection |
| 2040 | 269,142 | Projection |
| 2045 | 281,750 | Projection |
| 2050 | 296,400 | Projection |
Largest UN urban centres · Fastest-growing urban centres
What changed during your lifetime?
Turn these figures into a private, five-scene personal world story.
Use this source record with the right definition
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.