Acheng — UN urban centre
Acheng: 242,003 people. Reference: 2025 annual estimate · World rank #2,423 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 9862; 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: 45.5435, 126.975. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 173,900 | Estimate |
| 1980 | 191,414 | Estimate |
| 1985 | 205,506 | Estimate |
| 1990 | 219,525 | Estimate |
| 1995 | 222,720 | Estimate |
| 2000 | 215,827 | Estimate |
| 2005 | 228,524 | Estimate |
| 2010 | 241,538 | Estimate |
| 2015 | 248,131 | Estimate |
| 2020 | 242,397 | Estimate |
| 2025 | 242,003 | Estimate |
| 2030 | 240,253 | Projection |
| 2035 | 238,318 | Projection |
| 2040 | 235,362 | Projection |
| 2045 | 233,105 | Projection |
| 2050 | 229,220 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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