Hanoi is the capital and second-most populous municipality of Vietnam. It 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
Ba Đình is one of the four original urban districts of Hanoi, the capital city of Vietnam. The district currently has 14 wards, covering a total area of 9.21 square kilometres. As of 2019, there were