Santo André (Portuguese pronunciation: [sɐ̃twɐ̃ˈdɾɛ], Saunt Andras) is a Brazilian municipality locatit in the Metropolitan Region o São Paulo, includin a group o municipalities kent as Greater ABC Region. Its population in 2009 wis 673,396. It occupees an aurie o 175 square kilometers, resultin in a population density o 3,816.52 inhabitants per km ².