Seixal (Portuguese pronunciation: [sɐjˈʃaɫ]) is a Portuguese municipality, located in the district of Setúbal, in the region of Lisbon. Its population includes 184,269 inhabitants (2011), situated across the Tagus River estuary from Lisbon, in an area of 93.58 square kilometres (36.13 sq mi) that includes six parishes. Its seat is the city of Seixal a centre of 31,600 inhabitants situated along the Rio Judeu.