Catholics continue to be the largest religious group in Argentina, Brazil, Chile, Colombia, Mexico and Peru – despite declining as a share of these countries’ adult populations over the past decade. Today, Catholics make up between 46% and 67% of adults in the six Latin American countries surveyed.4 Religiously unaffiliated adults are the second-largest group in four of the countries: Argentina, Chile, Colombia and Mexico. (The religiously unaffiliated population, sometimes called religious “nones,” is comprised of people who answer a question about their religion by saying they are atheist, agnostic or “nothing in particular.”) In Brazil and Peru, Protestants are the second-largest group. Pew Research Center’s 2024 survey of six Latin American countries also finds that: One-in-five or fewer adults in each country are Pentecostal Protestants. Religious identity differs by age and education.…