Buenos Aires
203 km²
Washington D.C.
177 km²
Argentina
USA
Area Comparison
Buenos Aires is 1.1x larger than Washington D.C.
Population Comparison
Buenos Aires has 4.4x more people than Washington D.C.
In terms of area, Buenos Aires is 1.1x the size of Washington D.C.. Buenos Aires spans 203 km² (78 mi²) while Washington D.C. covers 177 km² (68 mi²) — a difference of 26 km².
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, Washington D.C. at 177 km² is roughly the same size as Washington D.C..
Buenos Aires's footprint is roughly about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park — pick whichever unit feels intuitive. Washington D.C., by comparison, equals about 25,000 American football fields, 88 times the area of Monaco, or 52 times the area of Central Park.
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.
Washington, D.C., officially the District of Columbia and commonly known as simply Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River across from Virginia and shares land borders with Maryland to its north and east. It was named after George Washington, a Founding Father and the first president of the United States.
Also known as "D.C.", Washington D.C. has an area of 177 km² and is home to 0.7 million people. It was established in 1790. Visitors come for White House, U.S. Capitol, Lincoln Memorial, and much more. Getting around is easy with the Washington Metro.
Washington D.C. sits on the Potomac River across from Virginia and is bordered by Maryland to its north and east
Looking beyond city limits, the Washington D.C. metropolitan area covers 14,412 km², which is 3.0x larger than greater Buenos Aires at 4,758 km². The Buenos Aires metro area is also more populous, with 15.2 million people compared to 6.3 million.
Buenos Aires has a population density of 15,074 people per km² — an extremely dense urban environment. Washington D.C., with 3,898 people per km², is a moderately dense city. Buenos Aires is dramatically more crowded, with 3.9x the population density.
This comparison spans continents — Buenos Aires in South America versus Washington D.C. in North America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Both cities share a humid subtropical climate, though local geography creates distinct microclimates in each. When it's noon in Buenos Aires, it's 10:00 AM in Washington D.C. — a 2-hour time difference.
Density Gap
Buenos Aires is 3.9x more densely populated
History
Buenos Aires is ~254 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).
Washington D.C. covers 177 km². Cities with a similar urban footprint include Stockholm (188 km²), Brussels (161 km²), Buenos Aires (203 km²), Minneapolis (149 km²), or Helsinki (214 km²).
The straight-line distance from Buenos Aires to Washington D.C. is 8,397 km (5,217 miles), with an estimated flight time of ~10h 23m.
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