Buenos Aires
203 km²
Seoul
605 km²
Argentina
South Korea
Area Comparison
Buenos Aires is 3.0x smaller than Seoul
Population Comparison
Buenos Aires has 3.2x fewer people than Seoul
In terms of area, Seoul is 3.0x the size of Buenos Aires. Seoul spans 605 km² (234 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 402 km². You could fit Buenos Aires inside Seoul approximately 2 times.
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, Seoul at 605 km² is about 1.3x smaller than New York City.
In more relatable units, Buenos Aires's 203 km² is about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park. Seoul works out to about 85,000 American football fields, 180 times the area of Central Park, or 10 times the area of Manhattan.
Buenos Aires, officially the Autonomous City of Buenos Aires, is the capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− global city, according to the GaWC 2024 ranking. The city proper has a population of 3.1 million and its urban area has a population of 16.7 million, making it the 21st most populous metropolitan area in the world.
Known as "Paris of South America", Buenos Aires covers 203 km² with a population of 3.1 million. The city was established in 1536. Buenos Aires is known for La Boca's Caminito, Recoleta Cemetery, Teatro Colón, among other attractions. The city's main transit system is the Buenos Aires Subte.
Buenos Aires is classified as an Alpha− global city according to the GaWC 2024 ranking.
Seoul, officially Seoul Special Metropolitan City, is the capital and largest city of South Korea, and the largest city in the whole of Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's sixth largest metropolitan economy in 2022, behind New York, Tokyo, Los Angeles, Paris, and London, and hosts more than half of South Korea's population.
Seoul has an area of 605 km² and is home to 9.8 million people. The city dates back to 18 BC. Visitors come for Gyeongbokgung Palace, Gangnam district, Myeongdong shopping, and much more. Getting around is easy with the Seoul Metro.
Seoul Metropolitan Area emerged as the world's sixth largest metropolitan economy in 2022, behind only NYC, Tokyo, LA, Paris, and London.
Looking beyond city limits, the Seoul metropolitan area covers 11,704 km², which is 2.5x larger than greater Buenos Aires at 4,758 km². The Seoul metro area is also more populous, with 25.5 million people compared to 15.2 million.
Buenos Aires has a population density of 15,074 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.
This comparison spans continents — Buenos Aires in South America versus Seoul in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Buenos Aires has a humid subtropical climate while Seoul experiences humid continental conditions. When it's noon in Seoul, it's midnight in Buenos Aires — a 12-hour time difference.
Size Ratio
Buenos Aires fits inside Seoul ~2 times
Time Difference
12 hours apart
History
Seoul is ~1,554 years older
Buenos Aires covers 203 km². Cities with a similar urban footprint include Helsinki (214 km²), Amsterdam (219 km²), Stockholm (188 km²), Osaka (225 km²), or Boston (232 km²).
Seoul covers 605 km². Cities with a similar urban footprint include Chicago (606 km²), Madrid (604 km²), Mumbai (603 km²), Toronto (630 km²), or Hyderabad (650 km²).
The straight-line distance from Buenos Aires to Seoul is 19,432 km (12,074 miles), with an estimated flight time of ~23h 22m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.