Discover the Christian congregations experiencing the most significant growth in Ireland, a nation with a rich history of faith. This analysis explores the rise of various branches of Christianity, highlighting trends such as the remarkable increase in Eastern Orthodoxy, largely driven by immigration. Despite a growing secularisation, Christian faith continues to evolve and attract new adherents across the island. Learn about the churches undergoing significant revitalisation and expansion within the Irish religious landscape. Explore the dynamics behind the growth of Christian churches in Ireland.
Accommodates one of the youngest congregations
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While the Presbyterian Church in Ireland has seen some overall decline, specific congregations like Maynooth Community Church are experiencing significant growth. The opening of a new purpose-built church in November 2024, largely driven by attracting international members, exemplifies this localized expansion.
Fastest-growing branch of Christianity since 1991
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As an umbrella organization for growing Pentecostal churches, Christian Churches Ireland (formerly Assemblies of God) is actively expanding its reach. Recent leadership changes in 2025 signal ongoing strategic efforts to support and develop its member congregations.
Raises people to maturity in Christ
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New Covenant Church – Ireland has an explicit mission to plant churches and grow congregations to at least 1% of the local population. This clear strategy for expansion indicates an active and expanding presence across the country.
Helps navigate life, relationships, and faith
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Lighthouse Church is a vibrant and rapidly expanding congregation with multiple locations across Ireland, including Dublin, Navan, Dundalk, and Swords. Its active expansion demonstrates significant and ongoing growth.
Associated with Elim Ministries Ireland
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Established in October 2020, New Life Church Birr is a relatively new and actively growing Christian church. Its affiliation with Elim Ministries Ireland and focus on community service mark it as a significant new addition to the Irish Christian scene.
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Offers worship, healing, and community
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New Life Family Church in Drogheda maintains an active presence, focusing on worship, healing, and community engagement. Its consistent activity and community-oriented approach suggest ongoing vitality and potential for growth.
Experiencing phenomenal growth
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The Redeemed Christian Church of God, a prominent Pentecostal denomination, has established over 100 congregations in the Republic of Ireland. Its significant presence makes it a key driver of growth within the broader evangelical movement.
Experienced significant growth between 2011 and 2022
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The Eastern Orthodox Church has been Ireland's fastest-growing religion since 1991, with significant increases noted in the 2022 census. It now represents the second-largest Christian denomination in the country, reflecting ongoing demographic shifts.
Fastest growing Christian denomination in Ireland
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Evangelical churches in Ireland are experiencing widespread growth, with a 2019 survey indicating over half were expanding and 88% expected further growth. They attract a young, ethnically diverse demographic, often operating as non-denominational or independent congregations.
Largest beneficiary of growth
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After a period of decline, the Catholic Church in Ireland is showing signs of resurgence, with the 2022 census indicating flattening declines among younger demographics. A March 2026 report suggests a 'reversal of the trend,' with a record number of converts expected in the Archdiocese of Dublin for Easter 2026.