Buenos Aires
203 km²
Rome
1,285 km²
Argentina
Italy
Area Comparison
Buenos Aires is 6.3x smaller than Rome
Population Comparison
Buenos Aires has 1.1x more people than Rome
Rome is significantly larger, covering 6.3 times the area of Buenos Aires. Rome spans 1,285 km² (496 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 1,082 km². You could fit Buenos Aires inside Rome approximately 6 times.
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, Rome at 1,285 km² is about 1.2x smaller than London.
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. For Rome, that's about 180,000 American football fields, 22 times the area of Manhattan, or 12 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.
Rome is the capital city and most populated comune (municipality) of Italy. It is also the administrative centre of the Lazio region and of the Metropolitan City of Rome. A special comune named Roma Capitale with a population of 2.7 million in an area of 1,287.36 km2 (497.1 mi2), Rome is the third most populous city in the European Union by population within city limits. The Metropolitan City of Rome Capital, with a population of 4.2 million, is the most populous metropolitan city in Italy.
Often called "The Eternal City", Rome has an area of 1,285 km² and is home to 2.9 million people. The city dates back to 753 BC. Visitors come for Colosseum, Vatican City, Trevi Fountain, and much more. Getting around is easy with the Rome Metro.
Rome's special comune Roma Capitale spans 1,287 km2, making it the third most populous city in the EU within city limits
Looking beyond city limits, the Rome metropolitan area covers 5,352 km², which is 1.1x 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 4.3 million.
Buenos Aires has a population density of 15,074 people per km² — an extremely dense urban environment. Rome, with 2,233 people per km², is a moderately dense city. Buenos Aires is dramatically more crowded, with 6.8x the population density.
This comparison spans continents — Buenos Aires in South America versus Rome in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Buenos Aires has a humid subtropical climate while Rome experiences Mediterranean conditions. When it's noon in Rome, it's 8:00 AM in Buenos Aires — a 4-hour time difference.
Size Ratio
Buenos Aires fits inside Rome ~6 times
Density Gap
Buenos Aires is 6.8x more densely populated
Time Difference
4 hours apart
History
Rome is ~2,289 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).
Rome covers 1,285 km². Cities with a similar urban footprint include Los Angeles (1,302 km²), Phoenix (1,341 km²), Rio de Janeiro (1,221 km²), San Antonio (1,209 km²), or Lagos (1,172 km²).
The straight-line distance from Buenos Aires to Rome is 11,152 km (6,929 miles), with an estimated flight time of ~13h 37m.
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