Copenhagen
91 km²
Osaka
225 km²
Denmark
Japan
Area Comparison
Copenhagen is 2.5x smaller than Osaka
Population Comparison
Copenhagen has 4.1x fewer people than Osaka
Osaka is significantly larger, covering 2.5 times the area of Copenhagen. Osaka spans 225 km² (87 mi²) while Copenhagen covers 91 km² (35 mi²) — a difference of 134 km². You could fit Copenhagen inside Osaka approximately 2 times.
To put Copenhagen's size in perspective, its area of 91 km² is about 1.2x smaller than Paris (city proper). Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Picture Copenhagen another way: its area is large enough to fit about 13,000 American football fields, 190 times the area of Vatican City, or 45 times the area of Monaco. Osaka works out to about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.
Copenhagen is the capital and most populous city of both the country of Denmark and the wider Kingdom of Denmark, with a population of 667,000 people in the municipality and 1.4 million in the urban area. The city is situated mainly on the island of Zealand (Sjælland), with a smaller part on the island of Amager. Copenhagen is separated from Malmö, Sweden, by the Øresund strait. The Øresund Bridge connects the two cities by rail and road.
Known as "City of Spires", Copenhagen covers 91 km² with a population of 0.7 million. The city was established in 1167. Copenhagen is known for The Little Mermaid statue, Tivoli Gardens, Nyhavn waterfront, among other attractions.
Copenhagen sits mainly on the island of Zealand, with a smaller portion on the island of Amager.
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. Its history stretches 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.
Copenhagen has a population density of 7,363 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 1.7 times more people per square kilometer.
Size Ratio
Copenhagen fits inside Osaka ~2 times
Density Gap
Osaka is 1.7x more densely populated
History
Osaka is ~522 years older
Copenhagen covers 91 km². Cities with a similar urban footprint include Zurich (88 km²), Lisbon (100 km²), Barcelona (101 km²), Paris (105 km²), or Vancouver (115 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 Copenhagen to Osaka is 8,607 km (5,348 miles), with an estimated flight time of ~10h 38m.
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