Algeciras — UN urban centre
Algeciras: 124,884 people. Reference: 2025 annual estimate · World rank #4,908 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 2462; territory: Spain (ESP). 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: 36.1313, -5.4523. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 85,514 | Estimate |
| 1980 | 87,336 | Estimate |
| 1985 | 94,043 | Estimate |
| 1990 | 101,851 | Estimate |
| 1995 | 101,834 | Estimate |
| 2000 | 100,829 | Estimate |
| 2005 | 103,953 | Estimate |
| 2010 | 108,827 | Estimate |
| 2015 | 116,528 | Estimate |
| 2020 | 124,774 | Estimate |
| 2025 | 124,884 | Estimate |
| 2030 | 123,717 | Projection |
| 2035 | 122,545 | Projection |
| 2040 | 121,097 | Projection |
| 2045 | 119,805 | Projection |
| 2050 | 117,887 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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