Religion in the Republic of Ireland
The predominant religion in the Republic of Ireland is Christianity, with the largest church being the Roman Catholic Church. The Irish constitution says that the state may not endorse any particular religion and guarantees freedom of religion.
Religion in the Republic of Ireland
In the 2016 census, 78.8% (3.7 million) of the population identified as Catholic which is 132,220 fewer than 5 years earlier in 2011 when the percentage stood at 84%.