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USA
Japan
Area Comparison
Chicago is 2.7x larger than Osaka
Population Comparison
Chicago has 1.0x fewer people than Osaka
Yes — Chicago is 2.7x larger than Osaka by area. Chicago spans 606 km² (234 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 381 km². You could fit Osaka inside Chicago approximately 2 times.
To put Chicago's size in perspective, its area of 606 km² is roughly the same size as Seoul. Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Third-largest city in the United States. Known as "The Windy City", Chicago covers 606 km² with a population of 2.7 million. The city was established in 1833. Chicago is known for Deep-dish pizza, Willis Tower, Millennium Park & Cloud Gate, among other attractions. The city's main transit system is the CTA (L train).
Chicago reversed the flow of the Chicago River in 1900, an engineering feat that still stands
Japan's third-largest city and a culinary capital. Nicknamed "The Kitchen of Japan", Osaka has an area of 225 km² and is home to 2.8 million people. It was established in 645. Visitors come for Osaka Castle, Dotonbori district, Street food culture, and much more. Getting around is easy with the Osaka Metro.
Osaka residents spend more on food per capita than any other city in Japan
Looking beyond city limits, the Chicago metropolitan area covers 28,160 km², which is 2.1x larger than greater Osaka at 13,228 km². The Osaka metro area is also more populous, with 19.3 million people compared to 9.5 million.
Chicago has a population density of 4,455 people per km² — a moderately dense city. Osaka, with 12,222 people per km², is an extremely dense urban environment. Osaka is noticeably denser, packing 2.7 times more people per square kilometer.
This comparison spans continents — Chicago in North America versus Osaka in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Chicago has a humid continental climate while Osaka experiences humid subtropical conditions. When it's noon in Osaka, it's midnight in Chicago — a 15-hour time difference.
Size Ratio
Osaka fits inside Chicago ~2 times
Density Gap
Osaka is 2.7x more densely populated
Time Difference
15 hours apart
History
Osaka is ~1,188 years older
The straight-line distance from Chicago to Osaka is 10,433 km (6,483 miles), with an estimated flight time of ~12h 46m. See full distance details, including timezone difference and city facts.
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