St. Catharines — UN urban centre
St. Catharines: 145,332 people. Reference: 2025 annual estimate · World rank #4,199 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 2985; 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: 43.1743, -79.2366. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 74,325 | Estimate |
| 1980 | 74,545 | Estimate |
| 1985 | 84,532 | Estimate |
| 1990 | 92,462 | Estimate |
| 1995 | 95,181 | Estimate |
| 2000 | 96,545 | Estimate |
| 2005 | 116,245 | Estimate |
| 2010 | 117,380 | Estimate |
| 2015 | 120,830 | Estimate |
| 2020 | 141,712 | Estimate |
| 2025 | 145,332 | Estimate |
| 2030 | 147,411 | Projection |
| 2035 | 148,915 | Projection |
| 2040 | 156,276 | Projection |
| 2045 | 157,071 | Projection |
| 2050 | 157,422 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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