Iwamizawa — UN urban centre
Iwamizawa: 51,230 people. Reference: 2025 annual estimate · World rank #11,959 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 1116; territory: Japan (JPN). 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: 43.2001, 141.7668. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1990 | 53,468 | Estimate |
| 1995 | 55,056 | Estimate |
| 2000 | 53,593 | Estimate |
| 2005 | 54,173 | Estimate |
| 2010 | 52,505 | Estimate |
| 2015 | 52,144 | Estimate |
| 2020 | 52,132 | Estimate |
| 2025 | 51,230 | Estimate |
| 2030 | 50,196 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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