Barcelona — UN urban centre
Barcelona: 3,982,704 people. Reference: 2025 annual estimate · World rank #114 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 5068; 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: 41.4252, 2.1551. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 2,234,530 | Estimate |
| 1980 | 2,329,061 | Estimate |
| 1985 | 2,416,126 | Estimate |
| 1990 | 2,502,305 | Estimate |
| 1995 | 2,746,288 | Estimate |
| 2000 | 2,831,378 | Estimate |
| 2005 | 3,048,752 | Estimate |
| 2010 | 3,262,861 | Estimate |
| 2015 | 3,551,880 | Estimate |
| 2020 | 3,877,253 | Estimate |
| 2025 | 3,982,704 | Estimate |
| 2030 | 4,049,293 | Projection |
| 2035 | 4,084,555 | Projection |
| 2040 | 4,112,669 | Projection |
| 2045 | 4,122,571 | Projection |
| 2050 | 4,117,282 | Projection |
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