Iwaki — UN urban centre
Iwaki: 71,937 people. Reference: 2025 annual estimate · World rank #8,647 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 6199; 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: 37.0504, 140.8778. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1995 | 76,147 | Estimate |
| 2000 | 76,079 | Estimate |
| 2005 | 72,490 | Estimate |
| 2010 | 69,449 | Estimate |
| 2015 | 69,963 | Estimate |
| 2020 | 72,565 | Estimate |
| 2025 | 71,937 | Estimate |
| 2030 | 71,123 | Projection |
| 2035 | 69,920 | Projection |
| 2040 | 68,712 | Projection |
| 2045 | 67,319 | Projection |
| 2050 | 66,036 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.