Honshu (本州 Honshuu) is the largest of the thousands of islands that make up Japan. Many of the most important cultural and economic centres of Japan lie within Honshu, which is also home to most of the country's population.
Honshu is divided into five regions, each with its own dialects, traditions and local character. Northernmost is snowy Tohoku; neighbouring Kanto includes the Japanese capital Tokyo within its borders; Chubu and Kansai[1] occupy the centre; and southernmost Chugoku marks the end of the island. 34 of Japan's 47 prefectures are located in Honshu. The total population was 103,423,000 in 2006;[2] only about 23 million people live on other islands.
Honshu's urban areas are particularly densely populated. Of Japan's eleven cities with a population exceeding one million, nine are on Honshu, and four of these - Tokyo, Yokohama, Saitama and Kawasaki - lie within the Greater Tokyo Area, the most populous urban region in the world. Tokyo itself includes over 12 million people within its municipal borders, making it the top city in Japan for population. Honshu is also host to other large urban regions centred around Nagoya and Osaka; with Tokyo, these three areas now include half the country's population for the first time ever.[3]