Okaya — UN urban centre
Okaya: 60,803 people. Reference: 2025 annual estimate · World rank #10,206 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 5543; 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: 36.0706, 138.0618. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 81,771 | Estimate |
| 1980 | 83,121 | Estimate |
| 1985 | 83,208 | Estimate |
| 1990 | 74,382 | Estimate |
| 1995 | 67,918 | Estimate |
| 2000 | 70,722 | Estimate |
| 2005 | 66,523 | Estimate |
| 2010 | 63,543 | Estimate |
| 2015 | 63,434 | Estimate |
| 2020 | 65,967 | Estimate |
| 2025 | 60,803 | Estimate |
| 2030 | 58,894 | Projection |
| 2035 | 57,036 | Projection |
| 2040 | 51,043 | 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.