Religion in Belfast
Belfast remains predominantly Christian by current religious affiliation, but its 2021 Census profile is more diverse and less religious than the traditional community-background figures can suggest. Current religion data show 42.3% Catholic and 37.4% Protestant or other Christian, giving 79.7% Christian overall. A further 17.4% reported no religion, 1.3% reported another religion and 1.6% did not state a religion. Belfast's largest non-Christian communities include Muslims, Hindus, Buddhists, Sikhs and Jews. For community-background analysis, a separate Census measure records a higher combined Christian upbringing figure, so it should not be presented as current religious affiliation.
Religion Percentages in Belfast
NISRA Census 2021 Community Demographics
Community & Cultural Highlights
- Northern Ireland's two Census measures should be kept separate. Current religion records what a person currently identifies with, while 'religion or religion brought up in' captures religious upbringing/background and can produce substantially different results.
- For Belfast, the 'religion or religion brought up in' measure gives about 47.9% Catholic and 36.5% Protestant or other Christian. This is not equivalent to saying that 84.4% currently practise or identify as Christian.
- Belfast's current-religion data show a much larger non-religious population than older census-era descriptions suggest: 17.4% reported no religion in 2021.
- Belfast City Council identifies South Belfast as historically the city's most diverse area. However, the council also notes that Belfast does not contain rigidly separated residential areas for each minority ethnic group.
- Belfast's religious geography is closely connected to the city's history of Catholic-Protestant community division, but contemporary Belfast also includes growing and established Muslim, Hindu, Buddhist, Sikh, Jewish and other communities.
- The Cathedral Quarter is a major heritage and cultural district centred on Belfast Cathedral, but its cultural significance extends beyond religion to arts, hospitality, architecture, festivals and city-centre regeneration.
- Belfast's Catholic heritage is represented by institutions such as St Malachy's Church, while Presbyterian, Church of Ireland and Methodist traditions form major parts of the city's Protestant and wider Christian heritage.
- The Belfast Jewish community is one of Northern Ireland's oldest minority religious communities and has contributed to the city's commercial, cultural and civic life despite its relatively small present-day size.
- Belfast's international diversity has increased in recent decades. The 2021 Census recorded 92.9% of the city's population in the White ethnic group, alongside Chinese, Indian, Black African, Filipino, Arab and other communities.
- The 2021 Census recorded about 9.8% of Belfast residents as born outside the United Kingdom, illustrating the city's increasingly international population alongside its historic Catholic and Protestant community structure.
Community Geographic Distributions in Belfast
Catholic affiliation is widespread in Belfast, with particularly strong concentrations in west and north Belfast as well as established Catholic communities elsewhere in the city.
Protestant and other Christian communities remain particularly prominent in east and parts of north and south Belfast, with Presbyterian, Church of Ireland, Methodist and other traditions represented.
South Belfast has historically been one of the city's most diverse areas, with international students, newer migrant communities and established ethnic and religious minorities. Belfast City Council notes that there are no single, distinct ethnic residential areas across the city.
Belfast's Jewish population is comparatively small but longstanding, with community institutions and synagogue life continuing in the city.
Belfast Religious Landscape & Demographic Analysis
According to official figures from the NISRA Census 2021, Religion and Religion or Religion Brought Up In, Belfast (total population: 345,418 across Northern Ireland) exhibits a distinct religious profile. Christianity represents 79.7% of the population. A substantial 17.4% of residents report having no religious affiliation. The Muslim community comprises 0.5% of local residents.
Local Places of Worship & Community Centers
Spiritual and community life in Belfast is supported by recognized places of worship across various neighborhoods, including St Anne's Cathedral (Belfast Cathedral) (Church of Ireland Cathedral located in Cathedral Quarter / Donegall Street), St Malachy's Church (Roman Catholic Church located in Alfred Street), Belfast Islamic Centre (Mosque and Islamic Community Centre located in Wellington Park), Belfast Hebrew Congregation (Jewish Synagogue located in Somerton / North Belfast), and Sikh Gurdwara Belfast (Sikh Gurdwara located in Belfast).
Neighborhood & Diaspora Insights in Belfast
Northern Ireland's two Census measures should be kept separate. Current religion records what a person currently identifies with, while 'religion or religion brought up in' captures religious upbringing/background and can produce substantially different results. For Belfast, the 'religion or religion brought up in' measure gives about 47.9% Catholic and 36.5% Protestant or other Christian. This is not equivalent to saying that 84.4% currently practise or identify as Christian. Belfast's current-religion data show a much larger non-religious population than older census-era descriptions suggest: 17.4% reported no religion in 2021. Belfast City Council identifies South Belfast as historically the city's most diverse area. However, the council also notes that Belfast does not contain rigidly separated residential areas for each minority ethnic group. Belfast's religious geography is closely connected to the city's history of Catholic-Protestant community division, but contemporary Belfast also includes growing and established Muslim, Hindu, Buddhist, Sikh, Jewish and other communities. The Cathedral Quarter is a major heritage and cultural district centred on Belfast Cathedral, but its cultural significance extends beyond religion to arts, hospitality, architecture, festivals and city-centre regeneration. Belfast's Catholic heritage is represented by institutions such as St Malachy's Church, while Presbyterian, Church of Ireland and Methodist traditions form major parts of the city's Protestant and wider Christian heritage. The Belfast Jewish community is one of Northern Ireland's oldest minority religious communities and has contributed to the city's commercial, cultural and civic life despite its relatively small present-day size. Belfast's international diversity has increased in recent decades. The 2021 Census recorded 92.9% of the city's population in the White ethnic group, alongside Chinese, Indian, Black African, Filipino, Arab and other communities. The 2021 Census recorded about 9.8% of Belfast residents as born outside the United Kingdom, illustrating the city's increasingly international population alongside its historic Catholic and Protestant community structure.
Practical Living & Community Guidance in Belfast
- •Do not use the 43.5% Catholic and 29.7% Protestant figures as the current-religion breakdown. Those figures appear in Belfast City Council materials using a different combined classification. NISRA's current-religion figures are 42.3% Catholic and 37.4% Protestant/other Christian.
- •The 2021 Census population of Belfast City Council area is approximately 345,418.
- •Religion not stated is approximately 1.6% under the current-religion classification.
- •Northern Ireland's Census is unusual within the UK because it reports both current religion and religion or religion brought up in. Both can be useful, but they answer different questions.
- •Census religion affiliation does not measure religious observance, church attendance, mosque attendance, synagogue attendance or strength of belief.
- •The religion question in the UK Census is voluntary; respondents who chose not to answer are recorded separately under 'not answered' and are distinct from 'no religion'.
- •Halal, Kosher, and vegetarian food products are widely accessible in major supermarkets and independent community grocery stores across the city.
- •Under the UK Equality Act 2010, religious belief and practice are protected characteristics against discrimination in workplaces, education, and housing.
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