Buenos Aires
203 km²
Mexico City
1,485 km²
Argentina
Mexico
Area Comparison
Buenos Aires is 7.3x smaller than Mexico City
Population Comparison
Buenos Aires has 3.0x fewer people than Mexico City
In terms of area, Mexico City is 7.3x the size of Buenos Aires. Mexico City spans 1,485 km² (573 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 1,282 km². You could fit Buenos Aires inside Mexico City approximately 7 times.
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, Mexico City at 1,485 km² is roughly the same size as London.
Picture Buenos Aires another way: its area is large enough to fit about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park. Mexico City, by comparison, equals about 208,000 American football fields, 25 times the area of Manhattan, or 14 times the area of Paris.
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.
Mexico City is the capital and most populous city of Mexico, as well as the most populous city in North America. It is one of the most important cultural and financial centers in the world, and is classified as an Alpha world city according to the Globalization and World Cities Research Network (GaWC) 2024 ranking. Mexico City is located in the Valley of Mexico within the high Mexican central plateau, at an altitude of 2,240 meters.
Nicknamed "CDMX", Mexico City has an area of 1,485 km² and is home to 9.2 million people. The city dates back to 1325. Visitors come for Zocalo square, Chapultepec Park, Frida Kahlo Museum, and much more. Getting around is easy with the Mexico City Metro.
Mexico City sits at an altitude of 2,240 meters in the Valley of Mexico on the high Mexican central plateau.
Looking beyond city limits, the Mexico City metropolitan area covers 7,854 km², which is 1.7x larger than greater Buenos Aires at 4,758 km². The Mexico City metro area is also more populous, with 21.8 million people compared to 15.2 million.
Buenos Aires has a population density of 15,074 people per km² — an extremely dense urban environment. Mexico City, with 6,202 people per km², is a densely populated city. Buenos Aires is noticeably denser, packing 2.4 times more people per square kilometer.
This comparison spans continents — Buenos Aires in South America versus Mexico City in North America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Buenos Aires has a humid subtropical climate while Mexico City experiences subtropical highland conditions. When it's noon in Buenos Aires, it's 9:00 AM in Mexico City — a 3-hour time difference.
Size Ratio
Buenos Aires fits inside Mexico City ~7 times
Density Gap
Buenos Aires is 2.4x more densely populated
Time Difference
3 hours apart
History
Mexico City is ~211 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).
Mexico City covers 1,485 km². Cities with a similar urban footprint include Delhi (1,484 km²), São Paulo (1,521 km²), Bangkok (1,569 km²), London (1,572 km²), or Bogotá (1,578 km²).
The straight-line distance from Buenos Aires to Mexico City is 7,392 km (4,593 miles), with an estimated flight time of ~9h 12m.
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