Osaka
225 km²
Vienna
415 km²
Japan
Austria
Area Comparison
Osaka is 1.8x smaller than Vienna
Population Comparison
Osaka has 1.4x more people than Vienna
Vienna is significantly larger, covering 1.8 times the area of Osaka. Vienna spans 415 km² (160 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 190 km².
To put Osaka's size in perspective, its area of 225 km² is roughly the same size as Amsterdam. Meanwhile, Vienna at 415 km² is about 1.5x smaller than Seoul.
Osaka's footprint is roughly about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park — pick whichever unit feels intuitive. For Vienna, that's about 58,000 American football fields, 120 times the area of Central Park, or 7 times the area of Manhattan.
Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third-most populous city in Japan, following the special wards of Tokyo and Yokohama. With an estimated population of 2,816,247 as of October 1, 2025 and a population density of about 12,505 people per square kilometer, it is the largest component of the Keihanshin Metropolitan Area, the second-largest metropolitan area in Japan and the 10th-largest urban…
Known as "Nation's Kitchen", Osaka covers 225 km² with a population of 2.8 million. The city was established in 645. Osaka is known for Osaka Castle, Dotonbori district, Universal Studios Japan, among other attractions. The city's main transit system is the Osaka Metro.
Osaka is the third-most populous city in Japan, following the special wards of Tokyo and Yokohama.
Vienna is the capital, most populous city, and one of the nine states of Austria. It is Austria's primate city, with just over two million inhabitants. Its larger metropolitan area has a population of nearly 2.9 million, representing nearly one-third of the country's population. Vienna is the cultural, economic, and political centre of the country, the fifth-largest city by population in the European Union, and the most populous of the cities on the river Danube.
Often called "City of Music", Vienna has an area of 415 km² and is home to 2.0 million people. Its history stretches back to 500 BC. Visitors come for Schönbrunn Palace, St. Stephen's Cathedral, Hofburg Palace, and much more. Getting around is easy with the Wiener Linien (U-Bahn).
Vienna's metropolitan area holds nearly 2.9 million people, representing roughly one-third of Austria's entire population
Looking beyond city limits, the Osaka metropolitan area covers 13,228 km², which is 3.4x larger than greater Vienna at 3,840 km². The Osaka metro area is also more populous, with 19.3 million people compared to 2.8 million.
Osaka has a population density of 12,222 people per km² — an extremely dense urban environment. Vienna, with 4,771 people per km², is a moderately dense city. Osaka is noticeably denser, packing 2.6 times more people per square kilometer.
This comparison spans continents — Osaka in Asia versus Vienna in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Osaka has a humid subtropical climate while Vienna experiences oceanic conditions. When it's noon in Osaka, it's 4:00 AM in Vienna — a 8-hour time difference.
Density Gap
Osaka is 2.6x more densely populated
Time Difference
8 hours apart
History
Vienna is ~1,145 years older
Osaka covers 225 km². Cities with a similar urban footprint include Amsterdam (219 km²), Boston (232 km²), Helsinki (214 km²), Kuala Lumpur (243 km²), or Buenos Aires (203 km²).
Vienna covers 415 km². Cities with a similar urban footprint include Denver (401 km²), Oslo (454 km²), Portland (376 km²), Philadelphia (370 km²), or Seattle (369 km²).
The straight-line distance from Osaka to Vienna is 8,999 km (5,592 miles), with an estimated flight time of ~11h 5m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.