Swansea — UN urban centre
Swansea: 141,420 people. Reference: 2025 annual estimate · World rank #4,310 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 919; territory: United Kingdom (GBR). 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: 51.6351, -3.9621. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 121,167 | Estimate |
| 1980 | 119,276 | Estimate |
| 1985 | 119,111 | Estimate |
| 1990 | 119,661 | Estimate |
| 1995 | 119,988 | Estimate |
| 2000 | 118,556 | Estimate |
| 2005 | 123,671 | Estimate |
| 2010 | 127,756 | Estimate |
| 2015 | 134,415 | Estimate |
| 2020 | 138,221 | Estimate |
| 2025 | 141,420 | Estimate |
| 2030 | 143,677 | Projection |
| 2035 | 162,822 | Projection |
| 2040 | 166,009 | Projection |
| 2045 | 167,135 | Projection |
| 2050 | 167,750 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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