Ireland Population Statistics 2026 | By Age Group & Facts

Population of Ireland 2026

Ireland’s population has entered a genuinely historic phase of sustained growth, with the country’s official estimates now sitting comfortably above 5.4 million people — a level unseen since well before the Great Famine of the 1840s. This growth is increasingly being driven by immigration rather than births, even as Ireland continues to record one of the higher fertility rates in the European Union, producing a demographic picture that is simultaneously expanding, diversifying, and gradually ageing all at once.

This guide compiles the latest Ireland population statistics for 2026, covering total population figures, births, deaths, and fertility trends, migration patterns, life expectancy, and the age structure shaping the country’s future. Whether you’re researching Ireland’s demographic trajectory, comparing it to the rest of the European Union, or simply looking for a clear, current snapshot of the numbers, this article lays out the fullest picture available using the most recent official data.

Interesting Facts About Ireland’s Population in 2026

Source: Central Statistics Office (CSO) Ireland, Population and Migration Estimates April 2025; Vital Statistics Yearly Summary 2025.

As a content writer analyzing this data, the clearest theme in Ireland’s 2026 population statistics is the widening gap between the country’s still-comparatively-strong fertility rate and its rapidly changing birth numbers on the ground. While Ireland’s Total Period Fertility Rate of 1.5 in 2025 remains below the replacement level of 2.1, it still ranks among the higher rates in the European Union — yet the absolute number of births has fallen sharply, from 65,909 in 2015 to just 54,125 in 2025, a decline of nearly 18% in a single decade, driven by both fewer women of childbearing age proportionally and mothers having children later in life.

The second major theme is just how thoroughly immigration has reshaped Ireland’s population growth engine. With 23.3% of residents now foreign-born, and births to non-Irish-national mothers climbing from 22% in 2021 to nearly 30% in 2025, Ireland’s population expansion is increasingly a story of international migration rather than domestic births alone. Combined with the country’s population passing 5.4 million — a figure not seen since before the Great Famine devastated Ireland’s population in the 1840s — this data captures a nation whose demographic trajectory has been completely reversed from the emigration-dominated 20th century that defined it for generations.

Total Population and Growth Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland, Population and Migration Estimates April 2025; Census of Population 2022.

Ireland’s population reached an estimated 5,458,600 people by April 2025, continuing a sustained growth trajectory that has now pushed the country’s population well past the symbolic 5 million mark it first crossed at the 2022 Census. This represents one of the more remarkable demographic reversals in modern European history: Ireland’s population peaked at roughly 8.2 million before the Great Famine of the 1840s, then collapsed through mass death and emigration to a low of around 2.8 million by 1961, before beginning a long, sustained recovery that has accelerated considerably since the 1990s.

What distinguishes Ireland’s current growth phase from earlier recovery periods is the changing balance between its two components: recent CSO data shows average annual net migration (36,631) now modestly outpacing average annual natural increase (27,915) — a genuine shift, since natural increase had reliably been the dominant driver of Irish population growth through most of the preceding decades. For anyone tracking Ireland’s demographic trends heading into the rest of 2026, this migration-led growth pattern, layered on top of the country’s already-strong fertility rate relative to EU peers, suggests continued robust population expansion, provided current migration trends hold.

Births, Deaths, and Natural Change Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland, Vital Statistics Yearly Summary 2025; Vital Statistics Quarterly Releases 2025.

Births in Ireland have fallen substantially over the past decade, dropping from 65,909 in 2015 to 54,125 in 2025 — a decline of nearly 18% — even as the country’s overall population continued growing throughout the same period. Meanwhile, deaths climbed modestly to 35,587 in 2025, up 414 from the year before, with the CSO noting that people aged 65 and over accounted for more than four-fifths (83.3%) of all deaths recorded, a proportion that will likely continue rising as Ireland’s population structure ages further.

The quarterly breakdown reveals just how sharply natural increase has narrowed: Q1 2025’s natural increase of just 3,435 represented a 60% decline compared to the equivalent quarter a decade earlier in 2015, driven by the combination of falling birth numbers and gradually rising deaths. On the encouraging side, Ireland’s infant mortality rate held steady at 3.0 per 1,000 live births in 2025, among the lower rates internationally, while the neonatal mortality rate of 2.3 per 1,000 reflects continued strong outcomes in maternal and newborn healthcare despite the broader decline in overall birth numbers nationally.

Fertility Rate Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland, Vital Statistics Quarterly Releases, 2025.

Ireland’s fertility rate has declined steadily but remains above the EU average in most comparative measures, falling from 1.9 in 2015 to 1.5 in 2025 — a drop of 0.4 over the decade, though quarterly data through 2025 shows further softening, with the Total Period Fertility Rate dipping to 1.4 by the fourth quarter. This places Ireland firmly below the 2.1 replacement level, consistent with virtually every other developed European nation, though Ireland’s rate has historically remained among the highest in the EU, a distinction it has held for decades even as it too has declined.

The data also confirms a broader pattern of delayed childbearing: the average age of all mothers giving birth climbed to 33.2 years in the first quarter of 2025, up from 32.5 years a decade earlier, while first-time mothers specifically averaged 31.8 years, more than a full year older than in 2015 and 3.1 years older than in 2005. Alongside this trend toward later motherhood, nearly four in ten births (39.9%) now occur outside marriage or civil partnership, reflecting Ireland’s significant social and cultural shifts away from the historically strong link between marriage and childbearing that characterized the country for much of the 20th century.

Migration and Foreign-Born Population Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland; Eurostat, 2025 estimates.

International migration continues to reshape Ireland’s population composition at a striking pace. Eurostat data places Ireland’s foreign-born population share at 23.3% as of 2025, up from 20% recorded at the 2022 Census, itself already a 3 percentage point increase from 2016. This growing diversity is reflected directly in birth statistics: just 70.2% of births in 2025 were to mothers holding Irish nationality, down sharply from 78% as recently as 2021, with mothers of nationalities outside Ireland, the UK, and the EU now accounting for 18.5% of all births nationally.

Ireland’s largest immigrant communities, each exceeding 10,000 people, span a genuinely diverse range of origins — from long-established Polish and British communities to faster-growing groups from India, Romania, Brazil, and Ukraine, the latter reflecting the humanitarian response to the war that began in 2022. For anyone researching Ireland’s population diversity heading into 2026, this migration data confirms that the country’s demographic transformation, visible clearly in both overall population figures and birth registration statistics, shows no signs of slowing as Ireland continues to serve as one of Europe’s more significant destinations for both EU and non-EU migration.

Regional Population Distribution Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland, Census of Population 2022, regional population tables.

Ireland’s population remains heavily concentrated around Dublin, which combines the country’s highest population density at 4,618 people per square kilometre in Dublin City itself with the largest overall population base in the wider Dublin region, exceeding 1.45 million residents across the city and county combined. This concentration has intensified further in recent years, with the commuter counties surrounding Dublin — Meath, Kildare, and Wicklow — recording some of the fastest population growth rates nationally between the 2016 and 2022 censuses, as rising housing costs in the capital itself push new residents toward the wider metropolitan periphery.

At the opposite end of the spectrum, County Leitrim remains Ireland’s most sparsely populated county, with a density of just 22 people per square kilometre, illustrating the significant regional imbalance that persists despite the country’s overall population growth. Cork, encompassing both Cork City and County, holds its position as Ireland’s second-largest population centre, though it remains considerably smaller than the Dublin region. For businesses, planners, and researchers examining Ireland’s population distribution in 2026, this continued concentration around Dublin and its commuter belt remains one of the most consistent and persistent features of the country’s demographic geography.

Ireland’s Population in a European Context 2026

Source: Central Statistics Office (CSO) Ireland; Eurostat, EU demographic comparisons, 2025-2026.

Placed within the wider European Union context, Ireland’s demographic profile stands out favourably compared to many of its continental peers. While Ireland’s fertility rate of 1.5 remains below the 2.1 replacement level, it continues to sit at or near the higher end of the EU range, most member states now recording similarly low or even lower fertility rates amid a broader continent-wide demographic slowdown. Combined with sustained positive net migration, Ireland’s overall population trajectory remains firmly growth-oriented, in contrast to several EU nations already experiencing outright population stagnation or decline.

This relatively favourable position reflects Ireland’s unique combination of a strong, internationally-connected economy, English-language accessibility for migrants, and historically higher fertility rates that, even as they decline, still outpace many other European nations. For policymakers and demographers comparing Ireland’s population statistics against the rest of the EU in 2026, this data suggests Ireland is likely to remain one of the faster-growing populations within the European Union for the foreseeable future, even as the underlying components of that growth continue shifting increasingly toward migration rather than natural increase.

Marriage and Household Formation Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland, Vital Statistics Quarterly Releases, 2025.

Beyond the headline birth and death totals, Ireland’s crude birth and death rates offer a useful standardized way to track demographic change independent of overall population growth. The birth rate fell from 14.7 per 1,000 population in Q1 2015 to just 10.2 per 1,000 in the equivalent quarter of 2025 — a substantially steeper decline than the raw birth numbers alone suggest, since it accounts for Ireland’s growing population base over the same period. The death rate, by contrast, has risen only marginally, from 7.3 to 7.6 per 1,000 population, reflecting the relatively gradual pace of population ageing compared to the much sharper drop in relative birth rates.

Family formation patterns have also shifted substantially: with nearly 40% of births now occurring outside marriage or civil partnership, Ireland has moved decisively away from the tightly marriage-linked childbearing patterns that defined the country for much of the 20th century, a shift consistent with similar trends across most of Western Europe. For anyone studying Ireland’s household and family statistics heading into 2026, this combination of falling relative birth rates and changing family structures represents a genuine, sustained transformation in Irish social patterns, running in parallel with the country’s broader demographic and migration-driven population growth.

Life Expectancy and Age Structure Statistics Ireland 2026

Source: Central Statistics Office (CSO) Ireland; Eurostat; Department of Health, “Health in Ireland: Key Trends,” 2026.

Ireland’s life expectancy at birth stands at approximately 80.2 years, split between 78.0 years for men and 82.6 years for women, figures broadly comparable to other high-income Western European nations. Despite the fertility declines documented elsewhere in this data, Ireland has historically maintained the youngest overall population of any European Union member state, a demographic advantage built up over decades of relatively higher birth rates compared to its EU peers, even as that fertility advantage has narrowed considerably in recent years.

Looking further ahead, the CSO’s own long-term population modeling assumes fertility will continue declining to around 1.3 by 2038, before stabilising at that lower level — a considerably more pessimistic assumption than the current 1.5 rate, reflecting expectations that Ireland’s fertility trends will continue converging toward the lower rates already seen across most of continental Europe. Combined with rising median household disposable income, which climbed 6.8% to €58,922 in 2024, this data suggests Ireland’s population in the years ahead will likely be shaped by a combination of continued but slowing natural increase, sustained immigration, and a gradually rising median age, even as the country retains a comparatively youthful demographic profile relative to much of the rest of the European Union for the foreseeable future.

Disclaimer: This research report is compiled from publicly available sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty, express or implied, is given as to the completeness or reliability of the information. We accept no liability for any errors, omissions, losses, or damages of any kind arising from the use of this report.

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