Christianity in Ireland

Christianity is and has been the largest religion in Ireland. Most Christian churches are organized on an all-Ireland basis, including both the Republic of Ireland and Northern Ireland. In the Republic of Ireland, 84.2% of the population adheres to the Roman Catholic Church. In Northern Ireland, the various branches of Protestantism collectively form a majority of the population but the single largest church is the Roman Catholic Church which accounts for some 40.8% of the population.

Irish Council of Churches
Churches Together in Britain and Ireland
Evangelical Alliance, UK

Church of Ireland (Anglican)
Association of Baptist Churches
Roman Catholicism
Assemblies of God
Elim Pentecostal Church
Presbyterian Church in Ireland

Roman Catholicism in Ireland is part of the worldwide Catholic Church. The Catholic Church in Ireland serves Catholics in both the Republic of Ireland and Northern Ireland under the spiritual leadership of Pope Francis and the Conference of Irish Bishops. In the Republic of Ireland, 87.4% of the citizens were baptised Catholic as infants while the figure for Northern Ireland is 43.8%.

Christianity had arrived in Ireland by the early 5th century, and spread through the works of early missionaries such as Palladius, and Saint Patrick. The Church is organised into four provinces; however, these are not coterminous with the modern civil provincial divisions. The church is led by four archbishops and twenty-three bishops; however, because there have been amalgamations and absorptions, there are more than twenty-seven dioceses. For instance, the diocese of Cashel has been joined with the diocese of Emly, Waterford with Lismore, and Ardagh with Clonmacnoise. The bishop of Galway is also the Apostolic Administrator of Kilfenora. There are 1,087 parishes, a few of which are governed by administrators, the remainder by parish priests. There about 3,000 secular clergy—parish priests, administrators, curates, chaplains, and professors in colleges.

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