The Àrea Metropolitana de Barcelona (AMB; English: Metropolitan Area of Barcelona) is a public body operating on the principle of metropolitan authority. It is composed of representatives of Barcelona and 36 adjacent municipalities accounting for a population of 3,239,337 (Idescat, 2014) within an area of 636 km. Its jurisdiction constitutes the main core of the unofficial Barcelona metropolitan area, with a population over 5 million.
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