Seoul — UN urban centre
Seoul: 22,490,482 people. Reference: 2025 annual estimate · World rank #10 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 332; territory: South Korea (KOR). 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: 37.4975, 126.9485. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 10,079,046 | Estimate |
| 1980 | 12,173,872 | Estimate |
| 1985 | 14,400,888 | Estimate |
| 1990 | 16,913,185 | Estimate |
| 1995 | 17,839,491 | Estimate |
| 2000 | 18,962,544 | Estimate |
| 2005 | 19,861,300 | Estimate |
| 2010 | 20,547,751 | Estimate |
| 2015 | 21,459,415 | Estimate |
| 2020 | 22,235,497 | Estimate |
| 2025 | 22,490,482 | Estimate |
| 2030 | 22,626,893 | Projection |
| 2035 | 22,562,299 | Projection |
| 2040 | 22,289,491 | Projection |
| 2045 | 21,844,921 | Projection |
| 2050 | 21,225,404 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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