Buenos Aires
203 km²
Lagos
1,172 km²
Argentina
Nigeria
Area Comparison
Buenos Aires is 5.8x smaller than Lagos
Population Comparison
Buenos Aires has 5.0x fewer people than Lagos
In terms of area, Lagos is 5.8x the size of Buenos Aires. Lagos spans 1,172 km² (453 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 969 km². You could fit Buenos Aires inside Lagos approximately 5 times.
To put Buenos Aires's size in perspective, its area of 203 km² is roughly the same size as Amsterdam. Meanwhile, Lagos at 1,172 km² is about 1.3x the size of Berlin.
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. Lagos works out to about 164,000 American football fields, 20 times the area of Manhattan, or 11 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.
Lagos, or Lagos City, is a large metropolitan port city in southwestern Nigeria. As of November 2025, the size of the city's population has been estimated to be between 17 and 21 million residents, making Lagos the largest city in Nigeria, the most populous urban area on the African continent, and one of the fastest-growing megacities in the world.
Often called "Lasgidi", Lagos has an area of 1,172 km² and is home to 15.4 million people. The city dates back to 1472. Visitors come for Victoria Island, Lekki Conservation Centre, Nike Art Gallery, and much more. Getting around is easy with the Lagos Rail (Blue & Red Lines).
Lagos is the most populous urban area on the African continent, with an estimated 17 to 21 million residents as of 2025.
Looking beyond city limits, the Buenos Aires metropolitan area covers 4,758 km², which is 1.8x larger than greater Lagos at 2,706 km². The Lagos metro area is also more populous, with 21.0 million people compared to 15.2 million.
Buenos Aires has a population density of 15,074 people per km² — an extremely dense urban environment. Lagos, with 13,131 people per km², is an extremely dense urban environment. Both cities have comparable density, though Buenos Aires is slightly more compact.
This comparison spans continents — Buenos Aires in South America versus Lagos in Africa. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Buenos Aires has a humid subtropical climate while Lagos experiences tropical savanna conditions. Winters differ dramatically: Lagos stays around 27°C while Buenos Aires drops to 11°C. When it's noon in Lagos, it's 8:00 AM in Buenos Aires — a 4-hour time difference.
Size Ratio
Buenos Aires fits inside Lagos ~5 times
Time Difference
4 hours apart
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).
Lagos covers 1,172 km². Cities with a similar urban footprint include San Antonio (1,209 km²), Rio de Janeiro (1,221 km²), Hong Kong (1,114 km²), Rome (1,285 km²), or Los Angeles (1,302 km²).
The straight-line distance from Buenos Aires to Lagos is 7,916 km (4,919 miles), with an estimated flight time of ~9h 49m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.