Karaj — UN urban centre
Karaj: 3,598,661 people. Reference: 2025 annual estimate · World rank #131 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 5114; territory: Iran (IRN). 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: 35.7595, 50.9761. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 861,698 | Estimate |
| 1980 | 1,020,427 | Estimate |
| 1985 | 1,338,832 | Estimate |
| 1990 | 1,681,241 | Estimate |
| 1995 | 1,811,885 | Estimate |
| 2000 | 1,965,705 | Estimate |
| 2005 | 2,238,005 | Estimate |
| 2010 | 2,630,633 | Estimate |
| 2015 | 3,021,330 | Estimate |
| 2020 | 3,347,818 | Estimate |
| 2025 | 3,598,661 | Estimate |
| 2030 | 3,727,488 | Projection |
| 2035 | 3,831,933 | Projection |
| 2040 | 3,932,803 | Projection |
| 2045 | 4,012,438 | Projection |
| 2050 | 4,064,578 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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