
Ireland is predominantly Catholic, with the religion accounting for 69% of the population as of the 2022 census. However, the country is becoming less religious, with the percentage of Catholics down from 79% in 2016 and 84.2% in 2011. This decline is part of a broader trend of secularisation in Ireland, particularly among younger generations. While the Catholic Church historically shaped social norms in Ireland, its influence has waned due to secularisation and church scandals. Despite this, Irish Catholic identity remains strong among diaspora communities, expressed through festivals, literature, and political activism.
| Characteristics | Values |
|---|---|
| Percentage of Irish residents who identify as Catholic | 69% |
| Percentage of Irish residents who identify as Catholic (Dublin) | 53% |
| Percentage of Irish residents who identify as Catholic (County Mayo) | 80% |
| Percentage of Irish residents who identify as Catholic (Tipperary, Offaly, Roscommon, Galway County) | 79% |
| Percentage of Irish residents who identify as Catholic (2011) | 84.2% |
| Percentage of Irish residents who identify as Catholic (2006) | 90% |
| Percentage of Irish residents who identify as Catholic (2016) | 79% |
| Percentage of Irish residents who are Christian | 82.3% |
| Percentage of Irish residents who are Church of Ireland (Anglican) | 2% |
| Percentage of Irish residents who are Muslim | 2% |
| Percentage of Irish residents who are Orthodox Christian | 2% |
| Percentage of Irish adults who identify as Roman Catholic but do not believe in God | 10.1% |
| Percentage of Irish residents who are Jewish | 0.03% |
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What You'll Learn

Catholicism is the largest religion in Ireland
The influence of Catholicism in Ireland goes beyond religious affiliation, as it has shaped the country's culture, literature, and history. Irish Catholic culture blends religious devotion with Irish heritage, expressed through festivals such as St. Patrick's Day, literature, and community life. Writers such as James Joyce, Seamus Heaney, and Edna O'Brien have explored themes of faith and identity in their works, contributing to the rich literary tradition of Irish Catholicism. Additionally, Irish Catholics have faced systemic discrimination, particularly under British rule, which has also influenced their identity.
Despite the decline in religious affiliation, Catholicism still plays a significant role in Ireland's education system. The state funds privately owned and managed primary schools, known as "national schools," most of which are affiliated with religious groups, including 88% affiliated with the Roman Catholic Church. However, there is a growing trend towards secularism, especially among younger generations, and efforts have been made to reduce the religious influence in schools. For example, parents can now opt their children out of religious studies, and the subject is not compulsory in the state-administered Junior Certificate.
While Catholicism is the dominant religion in Ireland, the country is becoming more religiously diverse. The Muslim and Hindu populations have experienced significant growth in recent years, and interfaith events such as Eid al-Adha celebrations in Dublin's Croke Park promote religious tolerance and integration. Additionally, the number of people identifying with "no religion" has increased, with more people choosing "no religion" as their response in the 2022 census compared to previous years. This trend towards secularism is reflected in Ireland's legal system, as the country underwent a period of legal secularisation in the late 20th century, removing specific religious groups from the Constitution.
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Secularism is on the rise in Ireland
Despite Christianity being the largest religion in Ireland, with Irish Christianity dominated by the Catholic Church, secularism is on the rise in the country. The percentage of Irish residents who identify as Catholic has been declining. In 2022, 69% of the population identified as Catholic, down from 79% in 2016. In 2011, 84.2% of Irish residents described themselves as Catholic, which was a decrease from over 90% in 2006. Dublin has the lowest percentage of Catholics in the Irish Republic, with just over half (53%) identifying as Catholics.
The rise of secularism in Ireland is particularly evident among the younger generations. Efforts have been made by secular groups to eliminate the rigorous study of Holy Communion and confirmation in Catholic schools. Parents can also choose to exclude their children from religious studies. The number of people describing themselves as having "no religion" in the Republic of Ireland has increased.
The influence of the Catholic Church in Ireland has waned due to secularisation and church scandals. The Church's opposition to divorce, abortion, and same-sex marriage sparked controversy, clashing with Ireland's growing secular values. In 2015, voters approved same-sex marriage, and in 2018, they repealed the abortion ban, rejecting the Church's positions. The Church's historical control over state-funded primary schools and institutions has also fuelled debate.
Ireland's Muslim and Hindu populations have experienced significant growth in recent years, contributing to the country's religious diversity. Interfaith celebrations and discussions between religious groups, secularist advocates, and the government indicate a trend towards greater religious tolerance and integration in Ireland.
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Irish Catholics have a dual identity
Irish Catholics have historically faced discrimination, especially during British rule in the 17th and 18th centuries when Penal Laws restricted their political, social, and economic rights. The Great Famine from 1845 to 1852 further fueled their emigration, leading to the establishment of large Irish Catholic communities abroad. Despite facing anti-Catholic prejudice in countries like the United States and Australia, they gradually gained political influence, as evidenced by the election of Catholic presidents like John F. Kennedy and Joe Biden.
Irish Catholics possess a dual identity, intertwining their religious beliefs with their Irish ethnicity. This ethnoreligious identity is expressed through various cultural elements, including the Irish language, Gaelic traditions, and a shared history marked by resilience in the face of adversity. Saint Patrick, a pivotal figure in introducing Christianity to Ireland in the 5th century, remains central to Irish Catholic devotion, with Saint Patrick's Day serving as a globally celebrated festival that blends religious services with cultural parades and displays.
The influence of the Catholic Church in Ireland has diminished over time due to increasing secularization and church scandals. Despite this, the ethnoreligious identity of Irish Catholics remains robust, particularly within diaspora communities. These communities actively preserve their heritage through social and charitable activities organized by cultural organizations like the Ancient Order of Hibernians. Literature has also played a significant role in exploring themes of faith and identity within the Irish Catholic context, with renowned writers like James Joyce, Seamus Heaney, and Edna O'Brien contributing to this discourse.
While the Church's stance on divorce, abortion, and same-sex marriage sparked controversy, clashing with Ireland's evolving secular values, it is important to note that the Church's historical control over state-funded primary schools and institutions has been a subject of debate and contributed to the country's ongoing process of legal secularization. The period of the Troubles in Northern Ireland, from the 1960s to 1998, further complicated Irish Catholic identity due to the divisive involvement of Catholic Republicans in groups like the IRA.
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Catholicism in Ireland is declining
Catholicism in Ireland is indeed declining. While Christianity is still the largest religion in Ireland, based on baptisms, the percentage of Irish residents who identify as Catholic has decreased in recent years. According to the 2022 census, 69% of the population is Catholic, down from 79% in the 2016 census. Dublin has the lowest percentage of Catholics in the Irish Republic, with just over half (53%) identifying as Catholic.
The decline in Catholicism in Ireland can be attributed to a variety of factors, including secularisation, church scandals, and changing social norms. Ireland has undergone a period of legal secularisation, with the fifth amendment of the constitution in 1972 deleting the article naming specific religious groups, including the Catholic Church. This reflects a general trend towards secularism in Irish society, particularly among younger generations.
The influence of the Catholic Church in shaping social norms and influencing marriage, education, and morality has also waned. For example, voters approved same-sex marriage in 2015 and repealed the abortion ban in 2018, rejecting the Church's positions on these issues. Additionally, there have been efforts by secular groups to reduce the focus on religious studies in schools.
While the number of Catholics in Ireland is declining, the country still has a strong ethnoreligious identity among diaspora communities. Irish Catholic culture blends religious devotion with Irish heritage, expressed through festivals, literature, and community life. Saint Patrick's Day, celebrated globally, is a hallmark of Irish Catholic identity.
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Catholics are the majority in rural Ireland
While Ireland is becoming less religious, with the percentage of residents identifying as Catholic falling to 69% according to the 2022 census, Catholicism remains the dominant religion in the country. This is particularly true in rural parts of Ireland, with County Mayo on the western seaboard reporting the highest proportion of Catholics at 80% of the county's population. Other rural regions such as Tipperary, Offaly, Roscommon, and Galway County are not far behind, with 79% of their populations identifying as Catholic.
The influence of Catholicism in Ireland is deeply rooted in its history. Irish Catholicism traces its origins to the 5th century with the arrival of Christianity attributed to Saint Patrick. By the Middle Ages, Ireland had become a center of Celtic Christianity, characterized by monastic traditions and distinct practices, although it was still aligned with the Roman Catholic Church. The English Reformation in the 16th century disrupted this as English rule imposed Protestantism, confiscated Catholic lands, and suppressed monasteries. Despite this, Irish Catholics persevered, and their dual identity as adherents of the Catholic Church and members of the Irish ethnic group became a defining feature of their culture.
Irish Catholic culture is a rich blend of religious devotion and Irish heritage. Saint Patrick's Day, celebrated globally, is a prime example of this fusion, featuring parades, religious services, and cultural displays. Devotion to saints, such as Saint Patrick and Our Lady of Knock, and practices like the Rosary are central to the religious life of Irish Catholics. The Irish language and Gaelic traditions, including music and dance, remain vibrant within Ireland and diaspora communities alike.
Historically, the Catholic Church played a significant role in shaping social norms in Ireland, influencing marriage, education, and morality. However, in recent times, there has been a general trend towards secularism, especially among the younger generations. This shift is reflected in the increasing number of people identifying as having "no religion" in the census. Despite the overall decline in religious affiliation, Catholicism continues to hold a prominent position in rural Ireland, shaping the cultural landscape and community life in these regions.
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Frequently asked questions
According to the 2022 census, 69% of Irish people identify as Catholic. This is down from 79% in 2016.
Just over half of the residents of Dublin, the Irish capital, identify as Catholic.
The number of Irish Catholics is decreasing.
Christianity is the largest religion in Ireland, with 82.3% of the population identifying as Christian.
Catholicism in Ireland can be traced back to the 5th century with the arrival of Christianity attributed to Saint Patrick. By the Middle Ages, Ireland was a center of Celtic Christianity. However, the English Reformation in the 16th century disrupted this as English rule imposed Protestantism.











































