Dallas
997 km²
Hanoi
3,359 km²
United States
Vietnam
Area Comparison
Dallas is 3.4x smaller than Hanoi
Population Comparison
Dallas has 6.2x fewer people than Hanoi
Hanoi is significantly larger, covering 3.4 times the area of Dallas. Hanoi spans 3,359 km² (1,297 mi²) while Dallas covers 997 km² (385 mi²) — a difference of 2,362 km². You could fit Dallas inside Hanoi approximately 3 times.
To put Dallas's size in perspective, its area of 997 km² is about 1.1x the size of Berlin. Meanwhile, Hanoi at 3,359 km² is about 1.2x smaller than Rhode Island.
Dallas's footprint is roughly about 140,000 American football fields, 17 times the area of Manhattan, or 9 times the area of Paris — pick whichever unit feels intuitive. For Hanoi, that's about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris.
Dallas is a city in the U.S. state of Texas. Located in the state's northern region, it is the ninth-most populous city in the United States and third-most populous city in Texas, with a population of 1.3 million at the 2020 census. Along with the city of Fort Worth, Dallas anchors the Dallas–Fort Worth metroplex, the fourth-most populous metropolitan area in the U.S. and the most populous metropolitan area in Texas, at 8.5 million people.
Known as "Big D", Dallas covers 997 km² with a population of 1.3 million. The city was established in 1841. Dallas is known for Dealey Plaza, Reunion Tower, Dallas Cowboys, among other attractions.
Dallas is the ninth-most populous U.S. city and the third-largest in Texas with 1.3 million residents.
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.
Often called "City Between Rivers", Hanoi has an area of 3,359 km² and is home to 8.1 million people. Its history stretches back to 1010. Visitors come for Hoan Kiem Lake, Old Quarter, Temple of Literature, and much more. Getting around is easy with the Hanoi Metro.
Hanoi encompasses 3,358.6 square kilometers and had a population of nearly 8.8 million as of 2025.
Dallas has a population density of 1,304 people per km² — a relatively spread-out city. Hanoi, with 2,397 people per km², is a moderately dense city. Hanoi is noticeably denser, packing 1.8 times more people per square kilometer.
Size Ratio
Dallas fits inside Hanoi ~3 times
Density Gap
Hanoi is 1.8x more densely populated
History
Hanoi is ~831 years older
Dallas covers 997 km². Cities with a similar urban footprint include Abu Dhabi (972 km²), San Diego (964 km²), Hong Kong (1,114 km²), Berlin (892 km²), or Lagos (1,172 km²).
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).
The straight-line distance from Dallas to Hanoi is 13,567 km (8,430 miles), with an estimated flight time of ~16h 28m.
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