Hanoi or Ha Noi About this sound pronunciation, estimated population nearly 6.5 million is the capital and second-largest city of Vietnam. From 1010 until 1802, it was the most important political centre of Vietnam. It was eclipsed by Huế during the Nguyễn Dynasty as the capital of Vietnam, but Hanoi served as the capital of French Indochina from 1902 to 1954. From 1954 to 1976, it was the capital of North Vietnam.The city is located on the right bank of the Red River. Hanoi is located at 1,760 km north of Ho Chi Minh City.