Japan comprises more than 3,000 small islands, and is separated from mainland Asia by the Sea of Japan.
The four main islands of Japan in descending order are:
The main island, Honshu, is itself divided into 5 regions:
The capital, Tokyo, is located in Kanto.
Japan covers an area of approximately 378,000 square kilometers, similar to that of Sweden.
It is important to note that as some 75% - 80% of the territory is hilly, the population is centered mainly in the plains and on the lower slopes. As a result, the population density is among the highest in the world, particularly in built-up areas. Thus, for example, the corridor between Tokyo and Kobe holds some 45% of the population although, in area, it is only 17% of the total area of the entire country.
Japan's population was estimated in 2023 at approximately 126.5 million.
From the aspect of religion, some 51% are followers of Shintoism, 43% are Buddhists, some 0.6% are Christians with the remainder belonging to other religions.
Ethnically, over 99% of the population is Japanese.
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