Christianity has been the foundational religion of Ireland since the 5th century. While the island was once famous as the “Land of Saints and Scholars,” it is currently experiencing a “Quiet Revolution” of rapid secularization.
Historical Milestones
- Arrival (5th Century): Christianity arrived through trade with Roman Britain.
- Missionaries: Saint Patrick is the most famous figure, though Palladius was sent by Rome in 431 AD as the first bishop.
- Monastic “Golden Age”: From the 6th–9th centuries, Irish monasteries (like Clonmacnoise and Glendalough) preserved Latin learning and produced treasures like the Book of Kells.
- Reformation (16th Century): The Church of Ireland was established by Henry VIII, but most of the population remained Roman Catholic despite centuries of restrictive “Penal Laws”.
- Independence & Control: After 1922, the Catholic Church held massive influence over Irish state policy, education, and healthcare.
Major Denominations (2021-2022 Data)
Most churches operate on an “all-island” basis, ignoring the political border between the Republic and Northern Ireland.
| Denomination | Republic of Ireland (%) | Northern Ireland (%) |
|---|---|---|
| Roman Catholic | 69.1% | 42.3% |
| Presbyterian | 0.5% | 16.6% |
| Church of Ireland (Anglican) | 2.1% | 11.5% |
| Orthodox | 2.1% | < 1% |
| Methodist | 0.1% | 2.4% |
| No Religion | 14.8% | 17.4% |
Modern Trends & Challenges
- Rapid Secularization: Weekly mass attendance has dropped from over 80% in 1990 to roughly 35% or lower today.
- The “Nones”: Those identifying with “No Religion” are the fastest-growing group, especially among people aged 25–29.
- Social Reform: Major referendums to allow same-sex marriage (2015) and abortion (2018) signals a shift away from traditional Catholic teaching.
- New Growth: Eastern Orthodoxy is currently the fastest-growing Christian branch, driven largely by immigration from Eastern Europe.
Education & Social Role
- School Ownership: The Catholic Church still manages about 90% of primary schools in the Republic, though the state now pushes for more “multi-denominational” options.
- Patron Saints: Saint Patrick remains the primary national symbol, alongside Saint Brigid and Saint Columba.
Links for further overview of Ireland:
Stichting HEALING THE NATIONS 