Historically a Catholic country, Brazil has been facing a religious transition since the 1990s, when what had been a steady growth of Evangelical Protestantism began to accelerate.

According to some experts, Brazilian Evangelicals could become a majority in the country as soon as 2032. This phenomenon is particularly strong in the Amazon, where some states have the biggest percentage of Evangelicals in the country.

Four of the six Brazilian States with the biggest proportion of Evangelicals are located in the Amazon, in the northern part of the country. In Rondônia, which is at the top of the list, there were 734,000 Catholics in 2010 – when the last data were released by the government – and 528,000 Evangelicals. Ten years before, in 2000, the number of Catholics was 793,000 and there were only 375,000 Evangelicals.