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South Korea
Iran
Area Comparison
Seoul is 1.2x smaller than Tehran
Population Comparison
Seoul has 1.1x more people than Tehran
Tehran is significantly larger, covering 1.2 times the area of Seoul. Tehran spans 730 km² (282 mi²) while Seoul covers 605 km² (234 mi²) — a difference of 125 km².
To put Seoul's size in perspective, its area of 605 km² is about 1.3x smaller than New York City. Meanwhile, Tehran at 730 km² is roughly the same size as New York City.
Capital of South Korea and a major tech hub. Known as "The Soul of Asia", Seoul covers 605 km² with a population of 9.8 million. The city was founded around 18 BC. Seoul is known for Gyeongbokgung Palace, Gangnam district, K-pop culture, among other attractions. The city's main transit system is the Seoul Metro.
Seoul's metro area contains nearly half of South Korea's entire population
Iran's capital and largest city. Also known as "The City of 72 Nations", Tehran has an area of 730 km² and is home to 9.1 million people. The city dates back to 1524. Visitors come for Golestan Palace, Grand Bazaar, Milad Tower, and much more. Getting around is easy with the Tehran Metro.
Tehran sits at the foot of Mount Damavand, the highest volcano in Asia at 5,610 meters
Looking beyond city limits, the Seoul metropolitan area covers 11,704 km², which is 5.2x larger than greater Tehran at 2,235 km². The Seoul metro area is also more populous, with 25.5 million people compared to 16.0 million.
Seoul has a population density of 16,149 people per km² — an extremely dense urban environment. Tehran, with 12,507 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. Seoul (South Korea) and Tehran (Iran) offer a fascinating regional contrast.
Seoul has a humid continental climate while Tehran experiences hot-summer Mediterranean conditions. When it's noon in Seoul, it's 6.5:00 AM in Tehran — a 5.5-hour time difference.
Time Difference
5.5 hours apart
History
Seoul is ~1,542 years older
The straight-line distance from Seoul to Tehran is 6,554 km (4,073 miles), with an estimated flight time of ~8h 13m. See full distance details, including timezone difference and city facts.
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