According to the Brazilian Institute of Geography and Statistics (IBGE), the total population of Brazil in February 2019 was of 209,575 thousand people, of which 48.90% were men and 51.10% were women.  Around 21.35% of the population are aged 14 years old or less, 69.43% are aged between 15 and 64 years old, and around 9.22% are aged 65 and over (Brazilian Institute of Geography and Statistics, 2019f). It is important to point out that these proportions vary among the five geographic regions in Brazil (North, Northeast, Central-west, South and Southeast). For example, in 2012 the proportion of people aged 65 and over was 4.5% in the Northern region, 7.2% in the North-Eastern region, 8% in both Southern and South-Eastern regions, and 5.8% in the Central-West region (Brazilian Ministry of Health, 2019o).

References:

Brazilian Institute of Geography and Statistics. (2019f). Population projections.

Brazilian Ministry of Health. (2019o). TabNet Win32 3.0: População Residente—Brasil. http://tabnet.datasus.gov.br/cgi/tabcgi.exe?ibge/cnv/popuf.def