Gölcük — UN urban centre
Gölcük: 207,386 people. Reference: 2025 annual estimate · World rank #2,873 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 3612; territory: Türkiye (TUR). 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: 40.7148, 29.8235. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1985 | 55,109 | Estimate |
| 1990 | 63,842 | Estimate |
| 1995 | 75,427 | Estimate |
| 2000 | 88,484 | Estimate |
| 2005 | 111,652 | Estimate |
| 2010 | 146,648 | Estimate |
| 2015 | 168,173 | Estimate |
| 2020 | 200,223 | Estimate |
| 2025 | 207,386 | Estimate |
| 2030 | 213,954 | Projection |
| 2035 | 219,582 | Projection |
| 2040 | 225,862 | Projection |
| 2045 | 229,411 | Projection |
| 2050 | 231,662 | 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.