Japan tsibiri ce mai volcanic tsibiri wanda ya kunshi kusan tsibirai 6,852. Manyan hudu sune Honshu, Hokkaido, Kyushu, da Shikoku, wanda ya kai kusan kashi casa'in da bakwai cikin dari na yankin Japan kuma galibi ana kiransu tsibiran gida. An rarraba kasar zuwa larduna 47 a yankuna takwas, tare da Hokkaido shine lardin arewaci kuma Okinawa shine mafi kudancin. Japan ita ce kasa ta biyu mafi yawan jama'a. Yawan jama'a miliyan 127 shine mafi girma a duniya, wanda kashi 98.7% na kabilar Jafananci ne. Mutanen Japan suna zaune a manyan biranen, yayin da kashi 9.3% ke zaune a yankunan karkara. Kimanin mutane miliyan 13.8 ke zaune a tsibirin, kuma galibi ana kiransu tsibiran gida. Tambayar ta farko da aka rubuta a tarihin Japan ta nuna yadda yawancin jama'a ke zaune a tsibirin Tokyo, babban birnin kasar Sin a farkon ƙarni na 38 AD. Tambayar ta farko da aka ambata a cikin tarihin Japan ta fito ne daga rubuce-rubuce na tarihi na Girka, wanda ya biyo bayan Tokyo a matsayin babban birnin kasar Sin
6,852