Guarujá is a municipality in the São Paulo state of Brazil. It is part of the Metropolitan Region of Baixada Santista. The population is 311,116 in an area of 143.58 km2. This place name comes from the Tupi language, and means "narrow path". The population is highly urbanized, forms a 2nd urban core and beachfront island across the river from São Vicente Island, the island is coterminous with the municipality, with exception of small offshore isles like Ilha dos Arvoredos.