Wikipedia
Jabodetabek (originally Jabotabek) is an official and administrative definition of the urban area or megacity surrounding the Indonesia capital city, Jakarta. The definition "Jabotabek" dated from the late 1970s and was revised to "Jabodetabek" a decade later when "De" (for "Depok") was inserted into the name; it finally included five municipalities and three regencies, it was officially expanded again in 2011 to "Jabodetabekjur" to incorporate a part of Cianjur Regency.
The area comprises the DKI Jakarta and parts of West Java and Banten provinces, specifically the three regencies of those provinces which surround Jakarta - Bekasi and Bogor in West Java, and Tangerang in Banten. Also included were the Kota (formerly Kotamadya) independent municipalities of Bogor, Depok, Bekasi, Tangerang and South Tangerang. The name of the region is taken from the first two (or three) letters of each city's name: Jabo(de)tabek from Jakarta, Bogor, (Depok), Tangerang and Bekasi.
Jabodetabek, with an area of 6,392 km2, was over 28.0 million according to the Indonesian Census 2010, and by January 2014 was officially estimated to have increased to over 30.0 million making it the most populous region in Indonesia, as well as the second most populous urban area in the world. The population share of Jabodetabek to national population was increased from 6.1% in 1961 to 11.26% in 2010.
The region is the center of government, culture, education, and economy of Indonesia. It has pulled many people throughout of Indonesia to come, live and work. Its economical power makes Jabodetabek the country's premier center for finance, manufacture and commerce.
The region was established in 1976 through Presidential Instruction No. 13 in response to the needs to sustain the growing population of capital city. Indonesia's government established Jabotabek Cooperation Body (Badan Kerjasama Pembangunan) of the joint secretariat of Government of DKI Jakarta and West Java province.