Alcácer do Sal is a municipality in Portugal with a total area of 1465.0 km² and a total population of 13,716 inhabitants.
The municipality is composed of 6 parishes, and is located in the district of Setúbal. The seat of the municipality is the city of Alcácer do Sal situated on the banks of the Sado River and with a population of 10,118 inhabitants.
The present Mayor is Pedro Manuel Igrejas da Cunha Paredes (Socialist), that conquered the municipality after a long period of ruling by the Portuguese Communist Party.
The municipal holiday is June 24, after Saint John.
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