Colachel — UN urban centre
Colachel: 837,735 people. Reference: 2025 annual estimate · World rank #627 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 10081; territory: India (IND). 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: 8.2866, 77.1978. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 267,410 | Estimate |
| 1980 | 306,975 | Estimate |
| 1985 | 407,000 | Estimate |
| 1990 | 513,896 | Estimate |
| 1995 | 587,418 | Estimate |
| 2000 | 638,999 | Estimate |
| 2005 | 667,725 | Estimate |
| 2010 | 690,500 | Estimate |
| 2015 | 706,988 | Estimate |
| 2020 | 776,775 | Estimate |
| 2025 | 837,735 | Estimate |
| 2030 | 921,978 | Projection |
| 2035 | 952,259 | Projection |
| 2040 | 973,969 | Projection |
| 2045 | 990,154 | Projection |
| 2050 | 1,000,380 | 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.