Auckland
559 km²
Buenos Aires
203 km²
New Zealand
Argentina
Area Comparison
Auckland is 2.8x larger than Buenos Aires
Population Comparison
Auckland has 2.1x fewer people than Buenos Aires
Yes — Auckland is 2.8x larger than Buenos Aires by area. Auckland spans 559 km² (216 mi²) while Buenos Aires covers 203 km² (78 mi²) — a difference of 356 km². You could fit Buenos Aires inside Auckland approximately 2 times.
To put Auckland's size in perspective, its area of 559 km² is roughly the same size as Seoul. Meanwhile, Buenos Aires at 203 km² is roughly the same size as Amsterdam.
In more relatable units, Auckland's 559 km² is about 78,000 American football fields, 160 times the area of Central Park, or 9 times the area of Manhattan. Buenos Aires works out to about 28,000 American football fields, 100 times the area of Monaco, or 60 times the area of Central Park.
Auckland is a large metropolitan city in the North Island of New Zealand. It has an urban population of about 1,547,200. It is located in the greater Auckland Region, the area governed by Auckland Council, which includes outlying rural areas and the islands of the Hauraki Gulf, and which has a total population of 1,816,000 as of June 2025. It is the most populous city of New Zealand and the fifth-most populous city in Oceania.
Known as "City of Sails", Auckland covers 559 km² with a population of 1.5 million. The city was established in 1840. Auckland is known for Sky Tower, Hauraki Gulf islands, Auckland Harbour Bridge, among other attractions.
Auckland is the most populous city in New Zealand and the fifth-most populous city in all of Oceania.
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.
Nicknamed "Paris of South America", Buenos Aires has an area of 203 km² and is home to 3.1 million people. The city dates back to 1536. Visitors come for La Boca's Caminito, Recoleta Cemetery, Teatro Colón, and much more. Getting around is easy with the Buenos Aires Subte.
Buenos Aires is classified as an Alpha− global city according to the GaWC 2024 ranking.
Auckland has a population density of 2,630 people per km² — a moderately dense city. Buenos Aires, with 15,074 people per km², is an extremely dense urban environment. Buenos Aires is dramatically more crowded, with 5.7x the population density.
Size Ratio
Buenos Aires fits inside Auckland ~2 times
Density Gap
Buenos Aires is 5.7x more densely populated
History
Buenos Aires is ~304 years older
Auckland covers 559 km². Cities with a similar urban footprint include Budapest (525 km²), Mumbai (603 km²), Madrid (604 km²), Warsaw (517 km²), or Seoul (605 km²).
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).
The straight-line distance from Auckland to Buenos Aires is 10,355 km (6,434 miles), with an estimated flight time of ~12h 41m.
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