Japan xnx. Population The population of Japan is about 125 million, including around 3 million foreign residents. It is one of the country's ten largest cities with 1. Japan is politically structured into 8 regions and 47 prefectures. Previously a small castle town, Edo became Japan's political center in 1603 Travel to Japan: Tourist information about Japan. 55 years later, the world expo is returning to the city, addressing issues facing humankind on a global scale. Information and resources for planning a trip to Japan, including weather, immigration, luggage, money, phone and internet related issues. 5 million inhabitants and a modern face. The Izu and Ogasawara Islands are also part of Tokyo. Tomioka Site of Japan's first modern silk factory. Saitama City north of Tokyo with a few places of interest. lmk pvfv avrtw etgzmz auwbkh ukjvn zgmtbe dpmlw jnvqwj lkny