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.
Três Rios
Três Rios (, ) is a municipality located in the Brazilian state of Rio de Janeiro. As of 2015 its population was 79,264 and its area is around 326 km².
As of 2017, the mayor of Três Rios is Josimar Sales Maia.