Sanmenxia — UN urban centre
Sanmenxia: 272,970 people. Reference: 2025 annual estimate · World rank #2,130 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 9032; territory: China (CHN). 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: 34.7779, 111.2023. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 76,460 | Estimate |
| 1980 | 102,120 | Estimate |
| 1985 | 138,336 | Estimate |
| 1990 | 181,845 | Estimate |
| 1995 | 234,301 | Estimate |
| 2000 | 288,813 | Estimate |
| 2005 | 301,945 | Estimate |
| 2010 | 298,860 | Estimate |
| 2015 | 288,341 | Estimate |
| 2020 | 275,132 | Estimate |
| 2025 | 272,970 | Estimate |
| 2030 | 269,279 | Projection |
| 2035 | 265,612 | Projection |
| 2040 | 260,808 | Projection |
| 2045 | 257,419 | Projection |
| 2050 | 252,233 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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