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Vietnam
USA
Area Comparison
Hanoi is 19.0x larger than Washington D.C.
Population Comparison
Hanoi has 11.7x more people than Washington D.C.
Hanoi is significantly larger, covering 19.0 times the area of Washington D.C.. Hanoi spans 3,359 km² (1,297 mi²) while Washington D.C. covers 177 km² (68 mi²) — a difference of 3,182 km². You could fit Washington D.C. inside Hanoi approximately 18 times.
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Washington D.C. at 177 km² is roughly the same size as Washington D.C..
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
Capital of the United States. Often called "D.C.", Washington D.C. has an area of 177 km² and is home to 0.7 million people. The city dates back to 1790. Visitors come for The White House, Lincoln Memorial, Smithsonian museums, and much more. Getting around is easy with the Washington Metro.
D.C. has more free museums than any other city in the US — all 19 Smithsonian museums charge no admission
Looking beyond city limits, the Washington D.C. metropolitan area covers 14,412 km², which is 4.3x larger than greater Hanoi at 3,359 km². The Hanoi metro area is also more populous, with 8.1 million people compared to 6.3 million.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Washington D.C., with 3,898 people per km², is a moderately dense city. Washington D.C. is noticeably denser, packing 1.6 times more people per square kilometer.
This comparison spans continents — Hanoi in Asia versus Washington D.C. in North America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Both cities share a humid subtropical climate, though local geography creates distinct microclimates in each. When it's noon in Hanoi, it's midnight in Washington D.C. — a 12-hour time difference.
Size Ratio
Washington D.C. fits inside Hanoi ~18 times
Density Gap
Washington D.C. is 1.6x more densely populated
Time Difference
12 hours apart
History
Hanoi is ~780 years older
The straight-line distance from Hanoi to Washington D.C. is 13,344 km (8,292 miles), with an estimated flight time of ~16h 12m. See full distance details, including timezone difference and city facts.
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