
The 2021 census revealed that 42.3% of the population of Northern Ireland identify as Catholic, with 37.3% identifying as Protestant or other Christian. This is the first time that Catholics have outnumbered Protestants in Northern Ireland, a significant milestone for a state that was designed to have a permanent Protestant majority. While this demographic shift has been interpreted as a step towards Irish reunification, it is important to note that a significant minority of Catholics do not necessarily support this move. Furthermore, a growing proportion of the Northern Irish population identifies as neither Catholic nor Protestant, complicating the political landscape.
| Characteristics | Values |
|---|---|
| Catholics as a percentage of the population in Northern Ireland | 40.8% (2011 census), 42.3% (2021 census) |
| Catholics as a percentage of the population in the Republic of Ireland | 84.2% (2011 census) |
| Protestants as a percentage of the population in Northern Ireland | 43.48% (2021 census) |
| Muslims as a percentage of the population in Northern Ireland | 0.57% (2021 census) |
| Hindus as a percentage of the population in Northern Ireland | 0.22% (2021 census) |
| Northern Irish population identifying as Christians | 79.7% (2021 census) |
| Northern Irish population with no religion | 17.4% (2021 census) |
| Northern Irish population with no stated religion or non-religious identity | 1.5% (2021 census) |
| Northern Irish population identifying as British only | 31.86% (2021 census) |
| Northern Irish population identifying as Irish only | 29.13% (2021 census) |
| Northern Irish population identifying as Northern Irish only | 19.78% (2021 census) |
Explore related products
$24.99 $26.99
What You'll Learn
- Catholics outnumber Protestants in Northern Ireland for the first time
- Catholics have a higher birth rate than Protestants
- Religious background and political identity no longer automatically align
- Catholics and Protestants tend to live separately from one another
- Catholics and Protestants are not distributed evenly across Northern Ireland

Catholics outnumber Protestants in Northern Ireland for the first time
Northern Ireland, a state designed a century ago to have a permanent Protestant majority, has witnessed a demographic shift. The results of the 2021 census indicate that Catholics outnumber Protestants in Northern Ireland for the first time. This milestone has been long-awaited by nationalists, who have relied on the prospect of demographic change to gain a majority in the North for Irish unity.
The 2021 census, published by the Northern Ireland Statistics and Research Agency, revealed that 42.3% of the 1.9 million people in Northern Ireland identified as Catholics or Roman Catholics. When including those with a Catholic background, this figure rose to 45.7%. Meanwhile, 37.3% identified as Protestant or other Christians, increasing to 43.5% when including those with a Protestant background.
The demographic shift has been attributed to higher birth rates among Catholics, which gradually closed the gap. However, it is important to note that religious background does not always align with voting patterns or political identity. Opinion polls suggest that a significant minority of Catholics do not necessarily favour Irish reunification, and a growing proportion of Northern Irish identify as neither Catholic nor Protestant.
The census also revealed that Northern Ireland's population is ageing, with a 5% increase in the number of people over 65 since 2011. The data on religious background stands in stark contrast to the state's foundation in 1921, when Britain created an entity with a two-thirds Protestant majority. The release of the census data comes at a fraught time for unionism, with post-Brexit trade barriers impacting Northern Ireland's relationship with Great Britain.
Catholic Coronation: What's the Connection?
You may want to see also
Explore related products

Catholics have a higher birth rate than Protestants
Northern Ireland was founded in 1921 with a two-thirds Protestant majority. However, the 2021 census showed that Catholics outnumbered Protestants in Northern Ireland for the first time. 45.7% of inhabitants are Catholic or from a Catholic background, compared with 43.48% from Protestant or other Christian backgrounds. This demographic shift was expected and is due to several factors, one of which is the higher birth rate among Catholics.
Historically, there were persistent differences between Catholics and Protestants in terms of birth rates, particularly during the early part of the twentieth century and continuing through the Baby Boom. Several factors contributed to higher fertility rates among Catholics. One factor was the Catholic doctrine prohibiting birth control. Additionally, education and income differences between the two groups played a role, as well as the distinctive family culture of immigrant Catholic populations. The prominent place of churches and Catholic schools in Catholic communities also influenced family size.
However, starting in the 1970s, demographers observed a convergence in Catholic and Protestant birth rates, marking the "end" of Catholic fertility. This shift coincided with the declining importance of specific religious denominations in the American religious landscape. Congregations became increasingly focused on individual spiritual expression rather than strict adherence to religious rules, leading to a decrease in social and political belief differences across denominations.
While the birth rate gap between Catholics and Protestants has narrowed, recent studies in the United States suggest that religious groups still face a stark decline in fertility rates. Liberal Protestant denominations, in particular, are facing a dire situation, with high rates of conversion away from these traditions and lower fertility rates. On the other hand, smaller religious groups, such as Hindus and Muslims, tend to have younger members who are having more children.
The relationship between religion and fertility is complex and influenced by various factors, including the strength of religious sentiment, individual spiritual expression, and societal changes. While Catholics have historically had higher birth rates than Protestants, the convergence of birth rates between the two groups highlights the dynamic nature of religious demographics and the impact of societal and cultural shifts on reproductive patterns.
Catholic Charities: Where Does the Money Go?
You may want to see also
Explore related products

Religious background and political identity no longer automatically align
Northern Ireland has no majority religion, either in terms of people's current religious position or their family background. According to the 2021 census, 42.3% of the population identified as Catholic, 37.3% as Protestant/other Christian, 1.3% as other religions, and 17.4% identified with no religion or did not state one. The Catholic Church is the largest single church, with 40.8% of the population identifying as Catholic in the 2011 census.
The religious landscape of Northern Ireland has been changing. In the 2011 census, 48% came from a Protestant background, 45% from a Catholic background, 0.9% from other religious backgrounds, and 5.6% from non-religious backgrounds. In the 2021 census, 45.7% of the population came from a Catholic background, 43.5% from a Protestant background, 1.5% from other religious backgrounds, and 5.6% from non-religious backgrounds. This shift has been attributed to higher birth rates among Catholics.
The political divide in Northern Ireland has traditionally been between unionists, who wish to remain part of the United Kingdom, and nationalists, who wish to unite with the Republic of Ireland. Unionists are predominantly Protestant, while nationalists are predominantly Catholic. However, this link between religious background and political identity is weakening. In recent elections, support for nationalist and unionist parties plateaued at around 40% each, leaving 20% of voters in the middle who are non-aligned and reject traditional sectarian labels.
The 2021 census also showed a loosening of British identity, with only 31.86% identifying as British only, 29.13% as Irish only, and 19.78% as Northern Irish only. This suggests that national identity is becoming more complex and that religious background and political identity are no longer automatically aligned.
The changing religious and political landscape in Northern Ireland has implications for the future of the region. The shift from a Protestant-majority to a Catholic-majority population has been described as a "demographic milestone" and a "blow" to unionists. The increasing number of centrist voters who feel Northern Irish rather than Irish or British could also play a crucial role in determining Northern Ireland's fate.
How to Know You're Going to Heaven
You may want to see also
Explore related products
$15.2 $32.99

Catholics and Protestants tend to live separately from one another
Northern Ireland does not have a Catholic majority. The 2021 census showed that 42% of the population identified as Catholic, while 46% said they were brought up in the Catholic religion. However, the same census also showed that Catholics outnumbered Protestants for the first time, with 45.7% of inhabitants being Catholic or from a Catholic background compared with 43.48% from Protestant or other Christian backgrounds. This demographic shift has been attributed to higher birth rates among Catholics.
Historically, Northern Ireland was designed to have a permanent Protestant majority. When Ireland was partitioned in 1921, six out of nine counties in the northern province of Ulster remained part of Britain, forming Northern Ireland. This was done to ensure a unionist majority, who generally wanted to remain in the United Kingdom and were mostly Protestant descendants of British colonists. The majority in what became the Irish Free State, and a significant minority in Northern Ireland, were Irish nationalists who were generally Catholic and wanted a united independent Ireland.
The religious and political divisions in Northern Ireland have led to a pattern of residential segregation, with Catholics and Protestants tending to live separately from one another. This segregation is particularly evident in Belfast and poorer neighbourhoods. The hostilities between adjacent working-class districts composed of different ethnoreligious communities have led to the creation of "peace lines," permanent structures aimed at keeping the groups apart. This complex sectarian geography has impacted the daily lives of residents, especially those from working-class backgrounds, by placing constraints on their physical mobility.
The segregation and tensions between Catholics and Protestants in Northern Ireland have a long history, dating back to the creation of the state in 1921. During the "Troubles" in the late 20th century, a period of ethno-political conflict, violence erupted between Catholics and Protestants, resulting in deaths, refugees, and the relocation of many Protestants from western and border areas. This violence further reinforced the separation between the two communities.
While religious background has traditionally been a significant factor in political identity in Northern Ireland, with Protestants tending to identify as British and Catholics as Irish, this relationship has become more complex in recent years. In the 2021 census, 31.86% identified as British only, 29.13% as Irish only, and 19.78% as Northern Irish only. Additionally, support for nationalist and unionist parties has plateaued at around 40% each, leaving a significant portion of voters in the middle who reject traditional sectarian labels.
The Catholic Commandments: A Guide to the Sacred Ten
You may want to see also
Explore related products

Catholics and Protestants are not distributed evenly across Northern Ireland
The 2021 census revealed that Catholics outnumber Protestants in Northern Ireland for the first time. 42.3% of the population identify as Catholic, 37.3% as Protestant or other Christian, and 17.4% as non-religious. However, when including those who were brought up in a religious household, the percentage of Catholics and Protestants rises to 45.7% and 43.5%, respectively. This demographic shift has been attributed to higher birth rates among Catholics.
The distribution of Catholics and Protestants is not even across Northern Ireland. While four of the six traditional counties had a Catholic majority in the 2021 census, one had a Protestant plurality, and one had a Protestant majority. The concentration of those with no religion in the 2011 census was in largely Protestant areas, suggesting that they were mostly from a Protestant background.
The religious composition of Northern Ireland has significant political implications. The state was established a century ago with a two-thirds Protestant majority to safeguard its position in the UK. The shift towards a Catholic majority has been interpreted as a symbolic milestone and a potential indicator of changing political sentiments. However, it is important to note that religious identity does not always align with voting patterns, and a significant minority of Catholics do not necessarily support Irish reunification.
The Catholic Church is the largest single church in Northern Ireland, but it does not constitute a majority. The 2011 census showed 40.8% Catholic, and the 2021 census showed a slight increase to 42.3%. While the Catholic population has seen a small growth, other Christian denominations have experienced a decline.
In summary, the 2021 census revealed that Catholics outnumber Protestants in Northern Ireland for the first time, but neither group constitutes a majority on its own. The distribution of Catholics and Protestants varies across the region, and the political implications of this demographic shift are complex and multifaceted.
When Do Catholic Baptisms Occur?
You may want to see also
Frequently asked questions
No, Northern Ireland does not have a majority Catholic population. The 2021 UK Census indicates that 42% of the Northern Ireland population currently describe themselves as Catholic, while 46% say they were brought up in that religion.
The Catholic Church is the largest single church in Northern Ireland.
In the 2021 census, 79.7% of the Northern Irish population identified as Christians.
In the 2021 census, 17.4% stated they were non-religious and 1.5% did not state a religious or non-religious identity.
In the 2021 census, the Muslim population stood at 0.57% of the population.











































