Hanoi
3,359 km²
Portland
376 km²
Vietnam
United States
Area Comparison
Hanoi is 8.9x larger than Portland
Population Comparison
Hanoi has 12.4x more people than Portland
In terms of area, Hanoi is 8.9x the size of Portland. Hanoi spans 3,359 km² (1,297 mi²) while Portland covers 376 km² (145 mi²) — a difference of 2,983 km². You could fit Portland inside Hanoi approximately 8 times.
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Portland at 376 km² is about 1.6x smaller than Seoul.
Picture Hanoi another way: its area is large enough to fit about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris. For Portland, that's about 53,000 American football fields, 190 times the area of Monaco, or 110 times the area of Central Park.
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.
Known as "City Between Rivers", Hanoi covers 3,359 km² with a population of 8.1 million. The city was established in 1010. Hanoi is known for Hoan Kiem Lake, Old Quarter, Temple of Literature, among other attractions. The city's main transit system is the Hanoi Metro.
Hanoi encompasses 3,358.6 square kilometers and had a population of nearly 8.8 million as of 2025.
Portland is the most populous city in the U.S. state of Oregon. Located in the Pacific Northwest at the confluence of the Willamette and Columbia rivers, it is the 28th-most populous city in the United States, sixth-most populous on the West Coast, and fourth-most populous in the Pacific Northwest, with a population of 652,503 at the 2020 census. The Portland metropolitan area, with over 2.54 million residents, is the 26th-largest metropolitan area in the nation.
Also known as "Rose City", Portland has an area of 376 km² and is home to 0.7 million people. Visitors come for Powell's City of Books, Voodoo Doughnut, Washington Park, and much more.
Portland sits at the confluence of the Willamette and Columbia rivers in the Pacific Northwest.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Portland, with 1,729 people per km², is a relatively spread-out city. Both cities have comparable density, though Hanoi is slightly more compact.
Size Ratio
Portland fits inside Hanoi ~8 times
Density Gap
Hanoi is 1.4x more densely populated
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).
Portland covers 376 km². Cities with a similar urban footprint include Philadelphia (370 km²), Seattle (369 km²), Dhaka (368 km²), Denver (401 km²), or Atlanta (348 km²).
The straight-line distance from Hanoi to Portland is 11,142 km (6,924 miles), with an estimated flight time of ~13h 37m.
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