Istanbul
Istanbul (15.8 million inhabitants): major city of Turkey, with country factbook, ranking and leader links.
Last updated: October 2026
| Country | Turkey |
|---|---|
| Population | 15.8 million |
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.
Istanbul has a metropolitan population of 15.8 million, according to the UN World Urbanization Prospects (2022 Revision) cited on this page.
Istanbul is in Turkey. It is a major city of Turkey.
Istanbul is a major city of Turkey. The Bureau’s profile records its population and country context; see the Turkey factbook for the wider national picture.