Istanbul

Istanbul is the largest city in Turkey, a megacity, constituting the country's economic, cultural, and historical center. With a population of over 15 million, it is home to 18%... Wikipedia

• Region:  Marmara
• Province:  Istanbul
• Provincial seat:  Cağaloğlu, Fatih
• Districts:  39
• Type:  Mayor–council government
• Body:  Municipal Council of Istanbul
• Mayor:  Nuri Aslan (acting) (CHP)
• Population (31 December 2025):  15,754,053
• Rank:  1st in Turkey and Europe, 8th in Asia
• Urban:  15,382,791
• Demonym(s):  Istanbulite
• Time zone:  TRT (UTC+3)
• Postal code:  34000 to 34990
• ISO 3166 code:  TR-34
• Vehicle registration:  34
• HDI (2022):  0.888 (very high) · 1st
• GeoTLD:  ist.istanbul
• Website:  ibb.istanbul (Municipality), istanbul.gov.tr (Governorship)
• Data source:  DuckDuckGo