Colchester — UN urban centre
Colchester: 134,095 people. Reference: 2025 annual estimate · World rank #4,541 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 6447; territory: United Kingdom (GBR). 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: 51.8868, 0.9031. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 81,948 | Estimate |
| 1980 | 84,812 | Estimate |
| 1985 | 86,298 | Estimate |
| 1990 | 89,843 | Estimate |
| 1995 | 91,359 | Estimate |
| 2000 | 98,077 | Estimate |
| 2005 | 104,645 | Estimate |
| 2010 | 110,542 | Estimate |
| 2015 | 115,954 | Estimate |
| 2020 | 118,227 | Estimate |
| 2025 | 134,095 | Estimate |
| 2030 | 141,309 | Projection |
| 2035 | 148,893 | Projection |
| 2040 | 154,618 | Projection |
| 2045 | 158,240 | Projection |
| 2050 | 162,871 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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