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.
Religion in the Republic of Ireland
A 2010 Bishops Conference survey found that 10.1% of Irish Catholics did not believe in God.