Sant Boi de Llobregat is a city in the Province of Barcelona in Catalonia, Spain, located on the banks of the Llobregat river. In 2019 it had 83,605 inhabitants. The city is divided into six neighborhoods: Ciutat Cooperativa-Molí Nou, Marianao-Can Paulet, Barri Centre, Vinyets-Molí Vell, Camps Blancs-Canons-Orioles, and Casablanca.