Rio de Janeiro is one of the states of Brazil, on the southeastern coast. Its capital is the city of Rio de Janeiro, which was the colony's capital from 1764 (the first being Salvador da Bahia), and the nation's capital from 1822 to 1960.
... 64, and 9.8% who are 65 years of age or older. The median age is 34 years. For every 100 females there are 91.0 males. For every 100 females age 18 and over, there are ...