São João de Meriti (Portuguese pronunciation:[ˈsɐ̃w ʒuɐ̃w ˈdʒi meˈɾitʃi]) is a Brazilian municipality in the state of Rio de Janeiro. Its historical name is São João do Rio Meriti. Its population was 598,456 inhabitants in 2013. It's located in the region of Baixada Fluminense, having 34.996km² (13.451 square miles).