Iizuka — UN urban centre
Iizuka: 84,437 people. Reference: 2025 annual estimate · World rank #7,382 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 1539; 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: 33.6404, 130.6821. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 70,169 | Estimate |
| 1980 | 71,373 | Estimate |
| 1985 | 73,939 | Estimate |
| 1990 | 78,998 | Estimate |
| 1995 | 84,843 | Estimate |
| 2000 | 84,151 | Estimate |
| 2005 | 87,790 | Estimate |
| 2010 | 87,498 | Estimate |
| 2015 | 87,359 | Estimate |
| 2020 | 86,307 | Estimate |
| 2025 | 84,437 | Estimate |
| 2030 | 82,348 | Projection |
| 2035 | 80,187 | Projection |
| 2040 | 78,019 | Projection |
| 2045 | 74,367 | Projection |
| 2050 | 72,357 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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