How Big Is Osaka?

Osaka Size Overview

Osaka covers an area of 225 km² (87 mi²) in Japan, Asia. Designated city in Kansai, Japan. The city is often called "Nation's Kitchen". To put this in perspective, Osaka is roughly the same size as Amsterdam. In more relatable units, that's about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.

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…

With a population of 2.8 million (19.3 million in the metropolitan area), Osaka has a population density of 12,222 people per km². The greater Osaka metropolitan area extends to 13,228 km².

Osaka has a history stretching back to 645. The city is renowned for Osaka Castle, Dotonbori district, Universal Studios Japan, and Takoyaki street food.

Osaka has a humid subtropical climate, with summer temperatures averaging 28°C and winters around 5°C. The city's main public transit system is the Osaka Metro.