Rio de Janeiro metropolitan area, according
to 2009 researches from Fundação Getúlio Vargas (known as Portuguese: Novo Mapa das
Religiões), nowadays rank first among Brazilian
peripheries in Irreligion percentage (23.68%), and it is also the least Roman
Catholic among Brazilian metropolitan areas, and trails only Boa Vista among
the least Roman Catholic (51–52%) Brazilian capitals (Rio de Janeiro state,
15.95%, simultaneously only trails Roraima, 19.39%, in Irreligion), while Rio
de