Ireland Sees Sharp Drop in Catholic Baptisms

Catholic baptisms across Ireland have fallen by almost 30% over the past decade, reflecting a combination of fewer births and a growing shift away from religious identification. A briefing by The Iona Institute, drawing on baptism figures from nearly all Catholic dioceses on the island, recorded a 29.6% decline compared with 2015. The report estimates that roughly 60% of the reduction is connected to Ireland’s falling birth rate, while secularisation accounts for much of the remaining decline. Births themselves dropped by 18.8% during the same period, with decreases recorded in both the Republic of Ireland and Northern Ireland. The impact has varied significantly between dioceses. Dublin recorded a nearly 40% fall in baptisms, dropping from 15,759 in 2015 to 9,465 in 2025. Meath experienced a 40.8% decline, while Down and Connor saw baptisms decrease by 37.9%. Other areas recorded much smaller changes, with Achonry down just 3.2% and Elphin registering a slight 0.9% increase. The institute cautioned against viewing the figures purely as evidence of secularisation. Demographic changes, particularly the smaller number of children being born, have played a major role. Census data also points to changing religious patterns among young children. In 2016, 78.3% of children aged under five in the Republic were recorded as Roman Catholic. By 2022, that figure had fallen to 65.4%, while the share listed as having no religion increased from 9.2% to 15.6%. Despite the broader decline, the report argues that Catholic identity remains influential among many families. Among mothers aged 25 to 39 with children under five, 67.9% identified as Catholic in the 2022 Census, a figure broadly comparable with the proportion of young children recorded as Catholic. The findings suggest that many families who identify culturally as Catholic continue to choose baptism for their children, even as regular church attendance and participation in other Catholic traditions have weakened. Regional trends further highlight the combined impact of demographics and secularisation. Dublin experienced a 21.9% decline in births between 2015 and 2025, while more than one in five children under five in the capital were recorded as having no religion in the 2022 Census. The report also points to similar changes in Belfast, where the proportion of young children recorded as having no religion increased significantly over the past decade. Iona Institute chairman Dr Tom Finegan said the decline in baptisms reflects both Ireland’s falling birth rate and the growth of secularism. He also highlighted the country’s fertility rate of around 1.5 children per woman, below the replacement level of 2.1. Overall, the figures illustrate a changing religious landscape in Ireland: fewer children are being born, more families are identifying as non-religious, yet Catholic baptism continues to remain significant among parents who retain a Catholic identity.