ATLAS · MEGA-CITIES · JAPAN
Mega-Cities of Japan
Japan has 2 urban areas of five million people or more — Tokyo and Osaka. The largest, Tokyo, holds an estimated 35,676,000people across its urban agglomeration — the largest urban area in the world. From Natural Earth, snapshot 2026-06-24.
MEGA-CITIESTokyo and Osaka
LARGEST (POPULATION)~35,676,000
NUMBER OF MEGA-CITIES2
The 2 mega-cities
Each urban area, with its estimated agglomeration population, largest first.
Tokyo~35,676,000 people
Osaka~11,294,000 people
In context
Where Japan's largest mega-citysits on the world’s scale of mega-cities — from the cities just over five million to the singular supergiant above twenty.
20M+Tokyo is here
15–20M
10–15M
7–10M
5–7M
Mega-cities of other countries
United States · Mexico · India · Brazil · China · Bangladesh · Argentina · Pakistan