Osaka
225 km²
Phoenix
1,341 km²
Japan
United States
Area Comparison
Osaka is 6.0x smaller than Phoenix
Population Comparison
Osaka has 1.7x more people than Phoenix
Yes — Phoenix is 6.0x larger than Osaka by area. Phoenix spans 1,341 km² (518 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 1,116 km². You could fit Osaka inside Phoenix approximately 5 times.
To put Osaka's size in perspective, its area of 225 km² is roughly the same size as Amsterdam. Meanwhile, Phoenix at 1,341 km² is about 1.2x smaller than London.
In more relatable units, Osaka's 225 km² is about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park. Phoenix works out to about 188,000 American football fields, 23 times the area of Manhattan, or 13 times the area of Paris.
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.
Phoenix is the capital and most populous city of the U.S. state of Arizona. With over 1.6 million residents at the 2020 census, Phoenix is the fifth-most populous city in the United States and the most populous state capital. The Phoenix metropolitan area, with an estimated 5.19 million residents, is the tenth-most populous metropolitan area in the U.S. and the most populous in the Mountain states and Southwest.
Often called "Valley of the Sun", Phoenix has an area of 1,341 km² and is home to 1.6 million people. It was established in 1868. Visitors come for Camelback Mountain, Desert Botanical Garden, Heard Museum, and much more.
Phoenix is the most populous U.S. state capital and the fifth-largest city in the country with 1.6 million residents.
Osaka has a population density of 12,222 people per km² — an extremely dense urban environment. Phoenix, with 1,201 people per km², is a relatively spread-out city. Osaka is dramatically more crowded, with 10.2x the population density.
Size Ratio
Osaka fits inside Phoenix ~5 times
Density Gap
Osaka is 10.2x more densely populated
History
Osaka is ~1,223 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).
Phoenix covers 1,341 km². Cities with a similar urban footprint include Los Angeles (1,302 km²), Rome (1,285 km²), Rio de Janeiro (1,221 km²), Delhi (1,484 km²), or Mexico City (1,485 km²).
The straight-line distance from Osaka to Phoenix is 9,676 km (6,012 miles), with an estimated flight time of ~11h 53m.
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