Sirius — UN urban centre
Sirius: 104,157 people. Reference: 2025 annual estimate · World rank #5,939 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 5530; territory: Russia (RUS). 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: 43.4744, 39.8985. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1990 | 63,844 | Estimate |
| 1995 | 65,320 | Estimate |
| 2000 | 65,084 | Estimate |
| 2005 | 64,114 | Estimate |
| 2010 | 63,179 | Estimate |
| 2015 | 102,385 | Estimate |
| 2020 | 104,828 | Estimate |
| 2025 | 104,157 | Estimate |
| 2030 | 103,678 | Projection |
| 2035 | 103,062 | Projection |
| 2040 | 102,705 | Projection |
| 2045 | 102,444 | Projection |
| 2050 | 102,265 | 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.