Hanoi old Quarters Hanoi is the capital of and the country’s second largest city. Its population in 2009 was estimated at 2.6 million for urban districts 6.5 million for the metropolitan jurisdictionFrom 1010 until 1802, it was the most important political centre of Vietnam. It was eclipsed by the imperial capital of Vietnam during the (1802–1945), but Hanoi served as the capital of from 1902 to 1954. From 1954 to 1976, it was the capital of and it became the capital of a reunified Vietnam in 1976, after the North’s victory in the