The prefectures of Japan are the country's 47 sub-national jurisdictions: one "metropolis" (都 to), Tokyo; one "circuit" (道 dō), Hokkaidō; two urban prefectures (府 fu), Osaka and Kyoto; and 43 other prefectures (県 ken). In Japanese, they are commonly referred to as todōfuken (都道府県). Prefectures are governmental bodies larger than cities, towns, and villages. Each prefecture is led by a directly elected governor and a single-chamber parliament.
The current system was established by the Meiji government in July 1871 with the abolition of the han system and establishment of the prefecture system (廃藩置県 haihan-chiken). Although there were initially over 300 prefectures, many of them being former han territories, this number was reduced to 72 in the latter part of 1871, and 47 in 1888. The Local Autonomy Law of 1947 gave more political power to prefectures, and installed prefectural governors and parliaments.
In 2003, then-Prime Minister Junichiro Koizumi proposed that the government consolidate the current prefectures into about 10 regional states. The plan called for each region to have greater autonomy than existing prefectures. This process will reduce the number of sub-prefecture administrative regions, and is expected to cut administrative costs. The Japanese government is also considering a plan by which several groups of prefectures would merge, creating a sub-national administrative division system consisting of between nine and thirteen states, and giving these states more local autonomy than the current prefectures enjoy. As of December 2007, no reorganization has taken place.