Koga — UN urban centre
Koga: 53,218 people. Reference: 2025 annual estimate · World rank #11,563 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 6163; 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: 36.1939, 139.7231. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 59,126 | Estimate |
| 1980 | 60,872 | Estimate |
| 1985 | 63,053 | Estimate |
| 1990 | 68,032 | Estimate |
| 1995 | 64,407 | Estimate |
| 2000 | 62,371 | Estimate |
| 2005 | 61,180 | Estimate |
| 2010 | 60,115 | Estimate |
| 2015 | 57,656 | Estimate |
| 2020 | 53,752 | Estimate |
| 2025 | 53,218 | Estimate |
| 2030 | 52,547 | Projection |
| 2035 | 51,570 | 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.