Tehran
Tehran (9.5 million inhabitants): major city of Iran, with country factbook, ranking and leader links.
Last updated: October 2026
| Country | Iran |
|---|---|
| Population | 9.5 million |
| Capital | Yes — national capital |
Source: UN World Urbanization Prospects, 2022 Revision (metropolitan agglomeration estimate). Observation date: 2022. The Bureau cross-checked major-city figures against UN WUP; smaller-city figures are presented as published and have not been individually re-verified.
Tehran has a metropolitan population of 9.5 million, according to the UN World Urbanization Prospects (2022 Revision) cited on this page.
Tehran is in Iran. It is the national capital of Iran.
Tehran is the national capital of Iran. As the capital, it is the country’s seat of government. The Bureau’s profile records its population and country context; see the Iran factbook for the wider national picture.