Hanoi[a] (Vietnamese: Hà Nội ⓘ) is the capital and second-most populous city of Vietnam. As evident by the literal translation of its name – 'inside the river'[17] – portions of Hanoi's border are delineated by the Red River and the Black River. As a municipality, Hanoi consists of 12 urban districts, 17 rural districts, and 1 district-level town (Sơn Tây). It has an area of 3,359.82 km2 (1,297.23 sq mi)[3] and a population of 8,435,700 in 2022.[9] In 2020, Hanoi has the second-highest gross regional domestic product of all Vietnam provinces and municipalities at 51.4 billion USD,[18] behind Ho Chi Minh City.[19] Hanoi Capital is also ASEAN 8th largest economy after Surabaya.