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Vietnam
China
Area Comparison
Hanoi is 3.0x larger than Hong Kong
Population Comparison
Hanoi has 1.1x more people than Hong Kong
Hanoi is significantly larger, covering 3.0 times the area of Hong Kong. Hanoi spans 3,359 km² (1,297 mi²) while Hong Kong covers 1,114 km² (430 mi²) — a difference of 2,245 km². You could fit Hong Kong inside Hanoi approximately 3 times.
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Hong Kong at 1,114 km² is about 1.2x the size of Berlin.
Vietnam's capital with over a thousand years of history. Known as "The City of the Ascending Dragon", Hanoi covers 3,359 km² with a population of 8.1 million. The city was established in 1010. Hanoi is known for Hoàn Kiếm Lake, Old Quarter (36 Streets), Ho Chi Minh Mausoleum, among other attractions. The city's main transit system is the Hanoi Metro.
Hanoi's Old Quarter has been a trading hub for nearly 1,000 years, with each street historically dedicated to a specific trade
A major financial hub and special administrative region of China. Also known as "Pearl of the Orient", Hong Kong has an area of 1,114 km² and is home to 7.4 million people. It was established in 1841. Visitors come for Victoria Harbour skyline, Dim sum cuisine, Star Ferry, and much more. Getting around is easy with the MTR Hong Kong.
Hong Kong has more skyscrapers than any other city in the world, with over 480 buildings above 150 meters
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Hong Kong, with 6,652 people per km², is a densely populated city. Hong Kong is noticeably denser, packing 2.8 times more people per square kilometer.
Both cities are in Asia, but they represent different national approaches to urban development. Hanoi (Vietnam) and Hong Kong (China) offer a fascinating regional contrast.
Both cities share a humid subtropical climate, though local geography creates distinct microclimates in each.
Size Ratio
Hong Kong fits inside Hanoi ~3 times
Density Gap
Hong Kong is 2.8x more densely populated
History
Hanoi is ~831 years older
The straight-line distance from Hanoi to Hong Kong is 873 km (542 miles), with an estimated flight time of ~1h 32m. See full distance details, including timezone difference and city facts.
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