How Big Is Hanoi?
Vietnam · Asia
Area
3,359 km²
1,297 mi²
Population
8.1M
Metro: 8.1M
Density
2,397/km²
Founded
1010
Hanoi Size Overview
Hanoi covers an area of 3,359 km² (1,297 mi²) in Vietnam, Asia. Capital municipality of Vietnam. The city is often called "City Between Rivers". To put this in perspective, Hanoi is about 1.2x smaller than Rhode Island. In more relatable units, that's about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris.
Hanoi is the capital and second-most populous municipality of Vietnam. It encompasses an area of 3,358.6 km2 (1,296.8 mi2), 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$48 billion in 2023, behind Ho Chi Minh City. It hosts 78 foreign embassies, the headquarters of the Vietnam People's Army (VPA), its Vietnam National University system, and other governmental organizations.
With a population of 8.1 million (8.1 million in the metropolitan area), Hanoi has a population density of 2,397 people per km².
Hanoi has a history stretching back to 1010. The city is renowned for Hoan Kiem Lake, Old Quarter, Temple of Literature, and Ho Chi Minh Mausoleum.
Hanoi has a humid subtropical climate, with summer temperatures averaging 30°C and winters around 17°C. The city's main public transit system is the Hanoi Metro.
Did You Know?
- Hanoi encompasses 3,358.6 square kilometers and had a population of nearly 8.8 million as of 2025.
- Hanoi hosts 78 foreign embassies and serves as the headquarters of the Vietnam People's Army.
- Hanoi posted Vietnam's second-highest gross regional domestic product at US$48 billion in 2023.
Cities Similar in Size to Hanoi
Hanoi covers 3,359 km². Cities with a similar urban footprint include Karachi (3,527 km²), Cairo (3,085 km²), Dubai (4,114 km²), Lima (2,672 km²), or Moscow (2,511 km²).