Religion in the Republic of Ireland
Christianity is the largest religion in the Republic of Ireland based on baptisms. Irish Christianity is dominated by the Catholic Church, and Christianity as a whole accounts for 82.3% of the Irish population. Most churches are organized on an all-Ireland basis which includes both Northern Ireland and the Republic of Ireland.
Irish travellers have traditionally adopted a very particular attitude to the Catholic Church, with a focus on figures such as "healing priests". More generally a tradition of visions continues, often outside of Church sanction.
Religion in Northern Ireland
Secularisation in Northern Ireland has followed different paths within each of the two main communities, being at a more advanced stage within the mainly Protestant community in which it is reflected more often with a formal move away from the churches and by expressing no formal religious attachment, mirroring the pattern in Great Britain, whereas in the mainly Catholic community it is reflected by declining mass attendance but often with retaining a formal Catholic identification, mirroring the pattern in the Republic of Ireland. Those stating that they had no religion in the 2011 census were concentrated in largely Protestant areas, suggesting that they were mostly from a Protestant background.