Longueuil — UN urban centre
Longueuil: 351,819 people. Reference: 2025 annual estimate · World rank #1,629 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 3792; territory: Canada (CAN). 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: 45.4993, -73.4663. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 251,036 | Estimate |
| 1980 | 251,379 | Estimate |
| 1985 | 256,355 | Estimate |
| 1990 | 277,534 | Estimate |
| 1995 | 290,446 | Estimate |
| 2000 | 297,433 | Estimate |
| 2005 | 312,883 | Estimate |
| 2010 | 327,062 | Estimate |
| 2015 | 334,287 | Estimate |
| 2020 | 345,387 | Estimate |
| 2025 | 351,819 | Estimate |
| 2030 | 359,184 | Projection |
| 2035 | 364,236 | Projection |
| 2040 | 367,609 | Projection |
| 2045 | 369,381 | Projection |
| 2050 | 370,108 | 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.