how many catholics are there in the world
The country where the membership of the church is the largest percentage of the population is Vatican City at 100%. According to the Census of the 2017 Annuario Pontificio (Pontifical Yearbook), the number of Catholics in the world was about 1.285 billion at the end of 2015. Conflicting numbers can be found in 2013 research conducted by Brazilian polling institute Datafolha.