- Urban Employment Area
nihongo|Urban Employment Area|都市雇用圏|Toshi Koyō-ken is a definition of
metropolitan area s, defined by the Center for Spatial Information Service, theUniversity of Tokyo . It is different fromJapan ese official definition of metropolitan areas defined by the Statistics Bureau, theMinistry of Internal Affairs and Communications . For the latter scheme, see the "List of metropolitan areas in Japan by population " article.The basic principle of UEA is similar to that of the Statistics Bureau definition; a central city and its associated outlying municipalities with certain amounts of commuters. A UEA with at least 50,000 DID (Densely Inhabited District) population is called nihongo|Metropolitan Employment Area|大都市雇用圏|Dai-toshi Koyō-ken. A UEA with at least 10,000 and less than 50,000 DID population is called nihongo|Micropolitan Employment Area|小都市雇用圏|Shō-toshi Koyō-ken.
Definition
;Central city:
*If a municipality has at least 10,000 DID population, and is not a suburb of any other municipalities, it is defined as a central city.
*Even if a municipality is a suburb of another, it can still be defined as a central city. In this case, a municipality must have workers working there more than those living there. It must also have the DID population of at least 10,000, or a third of the population of the central city.;Suburb:
*If a municipality A has more than 10% of its population commuting to a central city B, A is defined as a (primary) suburb of B.
**If there are multiple such cities for a suburb A, the one with the most commuters from A is defined as A's central city.
*If a municipality A has more than 10% of its population commuting to another suburb B, and if no other municipalities have more commuters from A, A is defined as a secondary suburb or lower of B.
*If a municipality A has more than 10% of its population commuting to B and vice versa, the one with the higher percentage of commuters is defined as a suburb of another.
*If a central city comprises multiple municipalities, numbers of commuters to all those municipalities are counted for the calculations above.Top 100 Urban Employment Areas in Japan
Source: [http://www.urban.e.u-tokyo.ac.jp/UEA/uea_code_e.htm Urban Employment Area (UEA) Code Table]
*"W/L" here is "jūgyō jōjū jinkōhi" (従業常住人口比), a number of workers working in the area, subtracted by the number of workers living in the area.
*DID population here is a population of central city. If an area has multiple central cities, only the most populous one among them is counted.
*A 2000 population decreased from 1995 is written in red figures.
*Metropolitan Employment Area is listed on white background. Micropolitan Employment Area is listed on yellow background.
*Prefectural capital is numbered with blue background. Non-capital is numbered with green background.
*1980 ranks exclude Kurashiki MEA, which was merged with Okayama MEA in 2000. Those under No. 100 are marked as "-".These areas have multiple central cities. Municipal names are as of 2000.
*Tokyo: 8;Special wards of Tokyo , Kawasaki,Yokohama , Atsugi, Chiba, Toda, Musashino, and Tachikawa.
*Osaka: 4; Osaka, Higashiōsaka, Moriguchi, and Kadoma.
*Nagoya: 2; Nagoya and Komaki.
*Okayama: 2; Okayama and Kurashiki. They were different UEAs until 1990.
*Tsukuba: 2; Tsukuba and Tsuchiura.
*Ōta: 2; Ōta and Ōizumi.
*Tokuyama: 3; Tokuyama, Kudamatsu, and Shinnan'yō.
*Kitakami: 2; Kitakami and Hanamaki.These areas changed their names between 1980 and 2000, as the most populated central cities have changed.
*Tsuchiura UEA changed to Tsukuba UEA after 1995.
*Kimitsu UEA changed to Kisarazu UEA after 1990.ee also
*
List of metropolitan areas in Japan by population
*List of Japanese cities by population External links
*en icon [http://www.urban.e.u-tokyo.ac.jp/UEA/index_e.htm UEA Urban Employment Area]
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