Tehran — UN urban centre
Tehran: 9,174,964 people. Reference: 2025 annual estimate · World rank #38 of 12,138 source urban centres. Source: UN DESA, World Urbanization Prospects 2025 (CC BY 3.0 IGO). Source identifier: 5264; 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: 35.6849, 51.3493. National context uses World Bank estimates, a separate series and geography; no national share is inferred here.
UN population series
| Year | People | Method |
|---|---|---|
| 1975 | 4,265,101 | Estimate |
| 1980 | 5,107,765 | Estimate |
| 1985 | 6,036,852 | Estimate |
| 1990 | 6,650,179 | Estimate |
| 1995 | 6,780,147 | Estimate |
| 2000 | 6,999,195 | Estimate |
| 2005 | 7,235,118 | Estimate |
| 2010 | 7,713,902 | Estimate |
| 2015 | 8,117,767 | Estimate |
| 2020 | 8,889,152 | Estimate |
| 2025 | 9,174,964 | Estimate |
| 2030 | 9,334,993 | Projection |
| 2035 | 9,418,887 | Projection |
| 2040 | 9,477,881 | Projection |
| 2045 | 9,518,600 | Projection |
| 2050 | 9,499,466 | Projection |
Largest UN urban centres · Fastest-growing urban centres
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