The number of Catholics in Ireland has dropped, according to the results of Census 2022, but this change must be properly interpreted. While there has been a decline among the Catholic population, a lot of immigrants are religious, and the way the religion question was rephrased since the last census has almost certainly had an impact on the results.

Although Ireland remains an overwhelmingly Catholic country (nominally at least), with 69pc of the population identifying as ‘Catholic’, there has been a big rise in the number of people who ticked the “no religion” box in the last Census, from 451,941 in 2016 to 736,210 in 2022, accounting for 14pc of the population.

Read more here: https://ionainstitute.ie/what-census-2022-tells-us-about-religion-in-ireland/