Belfast — UN urban centre
Belfast: 441,925 people. Reference: 2025 annual estimate · World rank #1,262 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 220; 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: 54.6013, -5.9369. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 301,514 | Estimate |
| 1980 | 314,473 | Estimate |
| 1985 | 326,581 | Estimate |
| 1990 | 343,679 | Estimate |
| 1995 | 368,069 | Estimate |
| 2000 | 397,610 | Estimate |
| 2005 | 403,167 | Estimate |
| 2010 | 407,056 | Estimate |
| 2015 | 413,389 | Estimate |
| 2020 | 429,540 | Estimate |
| 2025 | 441,925 | Estimate |
| 2030 | 457,621 | Projection |
| 2035 | 467,285 | Projection |
| 2040 | 526,801 | Projection |
| 2045 | 532,100 | Projection |
| 2050 | 541,746 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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