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.
Demographics of Brazil
According to the 2008 PNAD (National Household Sample Survey), conducted by the IBGE, the Brazilian Statistics bureau, there were about 189,953,000 inhabitants in 2008. As of the latest (2010) census, the Brazilian government estimates its population at 192.76 million.