The Brazilian Football League is highly regionalised because of the vast size of the country. The structure of the league has changed frequently from year to year as different configurations are experimented with. Many of the most important matches each season are derbies, especially those in São Paulo and Rio de Janeiro.
There follows a regionalised list of the noted teams in the Brazilian football league.
... and 28.1% who are 65 years of age or older. The median age is 50 years. For every 100 females there are 86.7 males. For every 100 females age 18 and over, there are ...