Siegen — UN urban centre
Siegen: 80,760 people. Reference: 2025 annual estimate · World rank #7,721 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 2750; territory: Germany (DEU). 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: 50.8898, 8.0227. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 89,743 | Estimate |
| 1980 | 84,238 | Estimate |
| 1985 | 77,846 | Estimate |
| 1990 | 79,030 | Estimate |
| 1995 | 81,393 | Estimate |
| 2000 | 78,414 | Estimate |
| 2005 | 76,380 | Estimate |
| 2010 | 72,106 | Estimate |
| 2015 | 70,530 | Estimate |
| 2020 | 79,727 | Estimate |
| 2025 | 80,760 | Estimate |
| 2030 | 80,121 | Projection |
| 2035 | 79,730 | Projection |
| 2040 | 79,333 | Projection |
| 2045 | 78,921 | Projection |
| 2050 | 78,373 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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