Okayama — UN urban centre
Okayama: 817,266 people. Reference: 2025 annual estimate · World rank #643 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 4011; 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: 34.6221, 133.8746. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 163,201 | Estimate |
| 1980 | 219,306 | Estimate |
| 1985 | 235,095 | Estimate |
| 1990 | 513,623 | Estimate |
| 1995 | 853,546 | Estimate |
| 2000 | 879,671 | Estimate |
| 2005 | 877,783 | Estimate |
| 2010 | 866,583 | Estimate |
| 2015 | 849,280 | Estimate |
| 2020 | 836,719 | Estimate |
| 2025 | 817,266 | Estimate |
| 2030 | 792,172 | Projection |
| 2035 | 764,168 | Projection |
| 2040 | 739,608 | Projection |
| 2045 | 693,305 | Projection |
| 2050 | 671,251 | Projection |
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