Geographic divisions cover the entire country, major regions, and states.
As Brazil takes a census every five years, population estimates and projections are updated with that same frequency. Population projections and estimates are based on data collected for Demographic Censuses, National Household Sample-Based Surveys, and Civil Register Vital Statistics for individuals. The most recent census was the population count of 1996, the reference date of which is August 1. Estimates and projections for municipalities and metropolitan areas are based on growth trends observed in the last two censuses. Semi-annual estimates are also available.