Lisbon Metropolitan Area (Portuguese: Área Metropolitana de Lisboa, or AML) is a territorial zone that includes 18 municipalities (concelhos) in Portugal. The smaller Grande Lisboa (Greater Lisbon) area is a subregion of the NUTS II Lisbon Region by its own right.
The Lisbon Metropolitan Area, centered in the Portuguese capital city of Lisbon, is the largest population concentration in Portugal. Preliminary data from the 2001 Portuguese census puts the population of the metropolitan area at 2,815,851 (about ¼ of the Portuguese population), of which 19.4% lives in the city of Lisbon. About 27% of the population of continental Portugal lives in the 2,957.4 km2 of AML (3.2% of the continental territory of Portugal), which has an active population of about 1.3 million people. With 32.7% of the national employment being located in its territory, the contribution of AML for the Gross Domestic Product surpasses 36%.
Today, Lisbon Metropolitan Area (AML) territory is almost the same as Lisbon Region territory, being AML a union of metropolitan municipalities, and Lisbon Region a NUTS II region.
The municipalities north of the Tagus River are from Lisbon District (Grande Lisboa), South are from de Setubal District (Peninsula de Setubal).
