Catholic Church in Ireland
In the 2016 Irish census 78.3% of the population identified as Catholic in Ireland; numbering approximately 3.7 million people. Unlike Catholics in the United States, Ireland has seen a significant decline from the 84.2% who identified as Catholic in the 2011 census.
Republic of Ireland
Religious freedom is constitutionally provided for in Ireland. Christianity is the predominant religion, and while Ireland remains a predominantly Catholic country, the percentage of the population who identified as Catholic on the census has fallen sharply from 84.2 percent in the 2011 census to 78.3 percent in the most recent 2016 census. Other results from the 2016 census are : 4.2% Protestant, 1.3% as Muslim, and 9.8% as having no religion. According to a Georgetown University study, before 2000 the country had one of the highest rates of regular Mass attendance in the Western world.
While daily attendance was 13% in 2006, there was a reduction in weekly attendance from 81% in 1990 to 48% in 2006, although the decline was reported as stabilising. In 2011, it was reported that weekly Mass attendance in Dublin was just 18%, with it being even lower among younger generations.