1961 Irish Census  Roman Catholic: 95%  Church of Ireland: 3.70%  Presbyterian:.7%  Methodist:.20%  Jewish:.10%  Other (including no stated religion):.40%

2011 Irish Census  Roman Catholic: 84%  Church of Ireland: 2.8%  Muslim: 1.0%  Presbyterian:.50%  Christian:.8%  Orthodox:.90%  Apostolic or Evangelical:.30%  Other: 1.7%  No Religion: 5.8%  Not Stated: 1.5%

Mass Attendance

 1970s : between 88 and 95 per cent  1980s: beginning to drop below 80 per cent  1990s: 77 per cent  2000s: 43 per cent  2012: 35 per cent