Hanoi is the capital and second-most populous city of Vietnam. The name "Hanoi" translates to "inside the river". As a municipality, since 2025, H…Hanoi is the capital and second-most populous city of Vietnam. The name "Hanoi" translates to "inside the river". As a municipality, since 2025, Hanoi consists of 51 wards and 75 communes. The city encompasses an area of 3,358.6 km². and as of 2025 has a population of 8,807,523. Hanoi had the second-highest gross regional domestic product of all Vietnamese provinces and municipalities at US$58,6 billion in 2025, behind only Ho Chi Minh City.