Brussels
161 km²
Osaka
225 km²
Belgium
Japan
Area Comparison
Brussels is 1.4x smaller than Osaka
Population Comparison
Brussels has 2.2x fewer people than Osaka
In terms of area, Osaka is 1.4x the size of Brussels. Osaka spans 225 km² (87 mi²) while Brussels covers 161 km² (62 mi²) — a difference of 64 km².
To put Brussels's size in perspective, its area of 161 km² is roughly the same size as Washington D.C.. Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Brussels's footprint is roughly about 23,000 American football fields, 80 times the area of Monaco, or 47 times the area of Central Park — pick whichever unit feels intuitive. Osaka works out to about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.
Brussels, officially the Brussels-Capital Region, is a region of Belgium comprising 19 municipalities, including the City of Brussels, which is the capital of Belgium. The Brussels-Capital Region is located in the central portion of the country. It is a part of both the French Community of Belgium and the Flemish Community, and is separate from the Flemish Region (Flanders), within which it forms an enclave, and the Walloon Region (Wallonia), located less than 4 km (2.5 mi) south.
Known as "Capital of Europe", Brussels covers 161 km² with a population of 1.3 million. The city was established in 1989. Brussels is known for Grand Place, Manneken Pis, Atomium, among other attractions.
The Brussels-Capital Region comprises 19 municipalities and forms an enclave entirely within the Flemish Region.
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…
Nicknamed "Nation's Kitchen", Osaka has an area of 225 km² and is home to 2.8 million people. The city dates back to 645. Visitors come for Osaka Castle, Dotonbori district, Universal Studios Japan, and much more. Getting around is easy with the Osaka Metro.
Osaka is the third-most populous city in Japan, following the special wards of Tokyo and Yokohama.
Brussels has a population density of 7,826 people per km² — a densely populated city. Osaka, with 12,222 people per km², is an extremely dense urban environment. Osaka is noticeably denser, packing 1.6 times more people per square kilometer.
Density Gap
Osaka is 1.6x more densely populated
History
Osaka is ~1,344 years older
Brussels covers 161 km². Cities with a similar urban footprint include Minneapolis (149 km²), Washington D.C. (177 km²), Miami (143 km²), Stockholm (188 km²), or Buenos Aires (203 km²).
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).
The straight-line distance from Brussels to Osaka is 9,371 km (5,823 miles), with an estimated flight time of ~11h 31m.
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