Chamusca is a municipality in Santarém District in Portugal. The population in 2011 was 10,120, in an area of 746.01 km².The present Mayor is Sérgio Carrinho, elected by the Unitarian Democratic Coalition. The municipal holiday is Ascension Day.ParishesAdministratively, the municipality is divided into 5 civil parishes : Carregueira Chamusca e Pinheiro Grande Parreira e Chouto Ulme Vale de Cavalos