Rio de Janeiro
Rio has more people living in slums than any other city in Brazil, according to the 2010 Census. More than 1,500,000 people live in its 763 favelas, 22% of Rio's total population. São Paulo, the largest city in Brazil, has more favelas (1,020) in sheer numbers, but proportionally has fewer people living in favelas than Rio.
Araruama
Araruama () is a municipality in the state of Rio de Janeiro, Brazil. Located at 22°52'22" of latitude South and 42°20'35" of longitude west, at an altitude of fifty feet. In 2010, its population was 118,964 inhabitants, which places it the second largest population in the Região dos Lagos.