The Brazilian Instituto Brasileiro de Geografia e Estatística recently released 2010 census statistics on religious affiliation in Brazil. The census found that 225,695 people identified as Latter-day Saint whereas the Church reported 1,138,740 members in Brazil in 2010. These findings indicate that self-identified Latter-day Saints on the census account for only 20% of total membership officially reported by the Church in Brazil. Furthermore, the percent of official LDS membership self-affiliating as Latter-day Saint on the census has declined over the past decade. The 2000 Brazilian census reported 199,645 Latter-day Saints, or 26% of LDS membership reported for that year (775,822). It is unclear whether there were any changes in reporting membership for various religious groups between 2000 and 2010 on the census, but other religious groups did not appear to exhibit any major increase or decline due to changes in reporting religious data.
The most concerning finding in comparing official LDS membership data and Brazilian census religious data is that the Church reported that membership increased by 362,918 members between 2000 and 2010 yet the censuses for these two years indicate a mere 26,050 increase in self-identified Latter-day Saints. In other words, the increase in census-reported Latter-day Saints was only seven percent of the membership increase reported by the Church!
To the contrary, Protestants have experienced major growth reflected in both church-reported members and census-reported members. In the past 30 years, the Brazilian census has revealed that the percentage of Protestants in the population increased from 6.6% to 22.2%. LDS Church-reported membership constitutes less than one percent of the Brazilian population and census-reported LDS numbers comprise close to one-tenth of one percent of the total population.