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Japan
South Korea
Area Comparison
Osaka is 2.7x smaller than Seoul
Population Comparison
Osaka has 3.6x fewer people than Seoul
Yes — Seoul is 2.7x larger than Osaka by area. Seoul spans 605 km² (234 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 380 km². You could fit Osaka inside Seoul approximately 2 times.
To put Osaka's size in perspective, its area of 225 km² is roughly the same size as Amsterdam. Meanwhile, Seoul at 605 km² is about 1.3x smaller than New York City.
Japan's third-largest city and a culinary capital. Known as "The Kitchen of Japan", Osaka covers 225 km² with a population of 2.8 million. The city was established in 645. Osaka is known for Osaka Castle, Dotonbori district, Street food culture, among other attractions. The city's main transit system is the Osaka Metro.
Osaka residents spend more on food per capita than any other city in Japan
Capital of South Korea and a major tech hub. Often called "The Soul of Asia", Seoul has an area of 605 km² and is home to 9.8 million people. It was founded around 18 BC. Visitors come for Gyeongbokgung Palace, Gangnam district, K-pop culture, and much more. Getting around is easy with the Seoul Metro.
Seoul's metro area contains nearly half of South Korea's entire population
Looking beyond city limits, the Osaka metropolitan area covers 13,228 km², which is 1.1x larger than greater Seoul at 11,704 km². The Seoul metro area is also more populous, with 25.5 million people compared to 19.3 million.
Osaka has a population density of 12,222 people per km² — an extremely dense urban environment. Seoul, with 16,149 people per km², is an extremely dense urban environment. Both cities have comparable density, though Seoul is slightly more compact.
Both cities are in Asia, but they represent different national approaches to urban development. Osaka (Japan) and Seoul (South Korea) offer a fascinating regional contrast.
Osaka has a humid subtropical climate while Seoul experiences humid continental conditions.
Size Ratio
Osaka fits inside Seoul ~2 times
Density Gap
Seoul is 1.3x more densely populated
History
Seoul is ~663 years older
The straight-line distance from Osaka to Seoul is 829 km (515 miles), with an estimated flight time of ~1h 29m. See full distance details, including timezone difference and city facts.
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