Guarulhos (Portuguese pronunciation: [ɡwaˈɾuʎus]) is the second largest city in the Brazilian state of São Paulo and a suburb of São Paulo city itself. In the last few years it has outgrown Campinas. The population in 2006 is 1,283,253, the density is 4,035.26 inh./km² and the area is 318 km². It is 12th largest incorporated city in Brazil.
Reference: http://en.wikipedia.org/wiki/Guarulhos