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.
Irreligion in the Republic of Ireland
A 2006 Dentsu poll found that 7% of Ireland had no religion. According to Greeley (2003), 5% of those in Ireland do not believe in God, but only 2% accept the self-identification of “atheist.” According to Ingelhart et al. (2004) and Davie (1999), 4% of the Irish do not believe in God.