Below is my translation of an article written by Angel Morote which appeared on the Rio das Ostras Jornal site.
Rio das Ostras has the third largest percentage of upper class (class "A") inhabitants in the state [of Rio de Janeiro].
Among those who fit the class "A" category, Rio das Ostras is third only to Niteroi and Rio de Janeiro.
Migration from the capital in the interior is one of the contributing factors.
