Hanoi
3,359 km²
Riyadh
1,798 km²
Vietnam
Saudi Arabia
Area Comparison
Hanoi is 1.9x larger than Riyadh
Population Comparison
Hanoi has 1.1x more people than Riyadh
Yes — Hanoi is 1.9x larger than Riyadh by area. Hanoi spans 3,359 km² (1,297 mi²) while Riyadh covers 1,798 km² (694 mi²) — a difference of 1,561 km².
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Riyadh at 1,798 km² is about 1.1x the size of London.
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. Riyadh works out to about 252,000 American football fields, 30 times the area of Manhattan, or 17 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.
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.
Riyadh is the capital and largest city of Saudi Arabia. It is also the capital of the Riyadh Province and the centre of the Riyadh Governorate. Located on the eastern bank of Wadi Hanifa, the current form of the metropolis largely emerged in the 1950s as an expansion of the 18th-century walled town, following the dismantling of its defensive fortifications.
Riyadh has an area of 1,798 km² and is home to 7.0 million people. Its history stretches back to 1746. Visitors come for Kingdom Centre Tower, Masmak Fortress, Al Faisaliah Tower, and much more.
Riyadh is the capital and largest city of Saudi Arabia, sitting on the eastern bank of Wadi Hanifa.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Riyadh, with 3,899 people per km², is a moderately dense city. Riyadh is noticeably denser, packing 1.6 times more people per square kilometer.
Density Gap
Riyadh is 1.6x more densely populated
History
Hanoi is ~736 years older
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).
Riyadh covers 1,798 km². Cities with a similar urban footprint include Houston (1,725 km²), Johannesburg (1,644 km²), Shenzhen (1,997 km²), Bogotá (1,578 km²), or London (1,572 km²).
The straight-line distance from Hanoi to Riyadh is 6,026 km (3,744 miles), with an estimated flight time of ~7h 35m.
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