Tokyo has about 9 mil people. However the biggest 5 cities account for about 20 mil people, which is about 16% of the population. In comparison, the top 5 cities in the US have about 0.6% of the population.
Almost everyone lives in Tokyo or cities west of it. Apart from Sapporo and Sendai, the biggest city north of Tokyo has 500,000 people (and even that’s only about 100 km to the north).
I have heard that about a third of Japan’s population is in Tokyo. Is that the very broad definition?
Japan in total is about 125 million people.
Tokyo itself is only about 14 million; greater Tokyo is about 40 million.
Tokyo has about 9 mil people. However the biggest 5 cities account for about 20 mil people, which is about 16% of the population. In comparison, the top 5 cities in the US have about 0.6% of the population.
Almost everyone lives in Tokyo or cities west of it. Apart from Sapporo and Sendai, the biggest city north of Tokyo has 500,000 people (and even that’s only about 100 km to the north).