Ireland Population 2026 | Live Population By Province
Ireland Population 2026: From Famine to Tech Boom Immigration
Ireland is one of the few countries in the world whose modern population is meaningfully smaller than its historical peak. The island of Ireland (including Northern Ireland) held approximately 8.5 million residents on the eve of the Great Famine in 1841. The famine itself killed approximately 1 million Irish residents and triggered the emigration of another 1.5 million within a decade. Subsequent generations of sustained emigration continued the decline, with the Republic of Ireland population falling to a low of approximately 2.8 million in 1961. The total island population (Republic plus Northern Ireland) reached a low of approximately 4.2 million during the same period.
The Irish population (Republic) in 2026 stands at approximately 5.4 million according to the live counters on worldpopulationclock.net, drawing on the United Nations World Population Prospects 2024 revision and the most recent estimates from the Central Statistics Office. Combined with Northern Ireland’s approximately 1.92 million residents, the island of Ireland holds approximately 7.32 million people, the highest figure since the 1850s but still below the pre-Famine peak.
The recent decades have transformed Ireland from a country of sustained emigration to one of substantial immigration. The Celtic Tiger economic boom of the 1990s and 2000s, the post 2010 technology sector expansion (Dublin now hosts European headquarters for Google, Meta, Apple, Microsoft, and many other major firms), and the post 2022 Ukrainian refugee inflow have together driven Irish population growth to among the fastest paces in Europe.
This piece examines the Irish population through the dramatic arc of demographic reversal, the county-level distribution across 26 counties of the Republic, and the trajectory toward what may eventually surpass pre-Famine peak levels.
A Population History Unlike Any Other in Europe
Ireland’s demographic trajectory differs fundamentally from that of nearly every other European country. While most European nations have grown continuously through the past two centuries (with the exceptions of wartime disruptions), Ireland declined dramatically and only recently reversed course.
A condensed timeline for the Republic of Ireland (excluding Northern Ireland after 1921 partition):
- 1841: approximately 6.5 million on the territory that would become the Republic
- 1851: approximately 5.1 million after famine and emigration
- 1901: approximately 3.2 million
- 1926: approximately 2.97 million (first census after independence)
- 1961: approximately 2.82 million (modern low point)
- 1991: approximately 3.53 million
- 2011: approximately 4.59 million
- 2026: approximately 5.4 million
The recent growth has been driven by a combination of factors: net immigration since the 1990s, a relatively high fertility rate by European standards through much of the post 1990 period (although fertility has declined recently), and the broader economic transformation that converted Ireland from one of Europe’s poorest countries to one of its wealthiest on a per capita basis.
Ireland Population by County: A Detailed Breakdown
The Republic of Ireland is divided into 26 counties, traditionally grouped into four provinces (Leinster, Munster, Connacht, and Ulster, with three Ulster counties being part of the Republic and the remaining six being part of Northern Ireland). The county structure reflects centuries of Irish historical development.
| County | Province | 2026 Population (Est.) | Notes |
|---|---|---|---|
| Dublin | Capital region, the largest | 1.51 million | Smallest by area in the mainland |
| Cork | Munster | 600,000 | Second largest |
| Galway | Connacht | 295,000 | Western Ireland |
| Kildare | Leinster | 260,000 | Dublin commuter belt |
| Meath | Leinster | 230,000 | Dublin commuter belt |
| Limerick | Munster | 215,000 | Mid-west |
| Donegal | Ulster | 170,000 | Northwestern |
| Tipperary | Munster | 175,000 | Inland |
| Wexford | Leinster | 175,000 | Southeastern |
| Kerry | Munster | 160,000 | Southwestern |
| Wicklow | Leinster | 165,000 | Dublin commuter belt |
| Mayo | Connacht | 150,000 | Northwestern |
| Clare | Munster | 130,000 | Western |
| Louth | Leinster | 145,000 | Eastern, Dundalk |
| Waterford | Munster | 130,000 | Southeastern |
| Westmeath | Leinster | 100,000 | Midlands |
| Laois | Leinster | 100,000 | Midlands |
| Offaly | Leinster | 90,000 | Midlands |
| Kilkenny | Leinster | 110,000 | Southeastern |
| Cavan | Ulster | 85,000 | Border region |
| Sligo | Connacht | 75,000 | Northwestern |
| Monaghan | Ulster | 67,000 | Border region |
| Roscommon | Connacht | 75,000 | Western |
| Carlow | Leinster | 65,000 | Midlands, the smallest by population |
| Longford | Leinster | 65,000The | Midlands, smallest by population |
| Leitrim | Connacht | 36,000 | Northwestern |
Source: Central Statistics Office, Ireland, 2025 county estimates and UN World Population Prospects 2024.
Dublin County holds approximately 1.51 million residents, accounting for 28 percent of the Republic’s population. The greater Dublin area, extending into Kildare, Meath, and Wicklow counties, holds approximately 2.1 million residents, making it the demographic and economic anchor of the country. Cork is the second largest at approximately 600,000.
The Dublin commuter belt counties of Kildare, Meath, and Wicklow have been among the fastest growing in Ireland over recent decades, supported by Dublin’s economic dynamism, combined with housing affordability pressures pushing residents to surrounding areas. Galway, in the west, has grown through both university expansion and lifestyle migration.
Several rural and peripheral counties, including Leitrim, Longford, Roscommon, and parts of Donegal, have grown more slowly or remained stagnant, although none have declined significantly in recent decades. The traditional pattern of rural depopulation through emigration has largely ended.
The Immigration Transformation
Ireland has shifted dramatically from a country of sustained emigration to one of substantial immigration. The transition began with the Celtic Tiger economic boom of the 1990s and has accelerated through subsequent decades.
Ireland hosts approximately 1.05 million foreign-born residents in 2026, representing approximately 19.5 percent of the total population. Major origin countries include:
- United Kingdom (largely English-born): approximately 110,000
- Poland: approximately 130,000
- India: approximately 65,000
- Romania: approximately 55,000
- Ukraine: approximately 110,000 (post 2022 refugees)
- Brazil: approximately 50,000
- Nigeria: approximately 30,000
- Lithuania: approximately 30,000
- China: approximately 25,000
- United States: approximately 18,000
The technology sector has been a particular driver of skilled migration, with Dublin hosting European or international headquarters for many major technology companies. The Ukrainian inflow after February 2022 added approximately 110,000 residents under temporary protection arrangements.
Demographic Profile in 2026
Irish total fertility sits at approximately 1.55 children per woman in 2026, having declined from above 2.0 in the late 2000s but still relatively high by European standards. Median age in Ireland is approximately 39 years, several years younger than the EU average.
Approximately 16 percent of Irish residents were aged 65 or older in 2026, with the share projected to climb past 22 percent by 2050. Aging is progressing but less acutely than in many other European countries, given Ireland’s relatively higher fertility and younger immigrant population.
Life expectancy at birth in Ireland stands at approximately 82.5 years overall, with women averaging approximately 84 years and men approximately 81 years.
Future Projections
| Year | Projected Ireland Population | Notes |
|---|---|---|
| 2030 | 5.6 million | Continued growth |
| 2040 | 5.9 million | Aging accelerates |
| 2050 | 6.1 million | Approaching long-term peak |
| 2075 | 6.3 million | Continued slow growth |
| 2100 | 6.4 million | Approaching long term peak |
Source: UN World Population Prospects 2024 medium variant.
The 2050 population figure of approximately 6.1 million would, for the first time since the 1840s, approach the pre-Famine population level on the territory that constitutes the modern Republic. Ireland is among the few European countries projected to continue growing throughout the twenty-first century.
Projections from the UN World Population Prospects 2024 revision suggest the Irish population will reach approximately 5.6 million by 2030, around 6.1 million by 2050, and approximately 6.4 million by 2100. The trajectory assumes continued moderate fertility, sustained immigration, and gradual mortality improvements.
Frequently Asked Questions
What is the population of Ireland in 2026?
The Republic of Ireland’s population in 2026 stands at approximately 5.4 million residents. Including Northern Ireland’s approximately 1.92 million, the island of Ireland holds approximately 7.32 million people, the highest figure since the 1850s.
Which Irish county has the largest population?
Dublin is the largest county at approximately 1.51 million residents, accounting for 28 percent of the Republic’s population. Cork follows at 600,000, then Galway at 295,000.
What is Ireland’s fertility rate?
Ireland’s total fertility rate sits at approximately 1.55 children per woman in 2026, having declined from above 2.0 in the late 2000s. The figure remains relatively high by European standards.
Has Ireland ever recovered from the Great Famine?
The Republic of Ireland population in 2026, at 5.4 million, is still slightly below the pre-Famine level on equivalent territory (approximately 6.5 million in 1841). Projections suggest the country could approach pre-Famine population levels by approximately 2050.
How many immigrants live in Ireland?
Ireland hosts approximately 1.05 million foreign-born residents in 2026, representing approximately 19.5 percent of the total population. Major origin countries include Poland, the UK, India, Romania, Ukraine, and Brazil.
What is the population of Dublin?
Dublin County holds approximately 1.51 million residents. The greater Dublin area, extending into Kildare, Meath, and Wicklow counties, holds approximately 2.1 million.
How did the Celtic Tiger affect Irish demographics?
The Celtic Tiger economic boom of the 1990s and 2000s reversed Ireland’s historical pattern of emigration, with the country becoming a net immigration destination for the first time in modern history. The Irish population has grown by approximately 1.8 million since 1991.
What is the median age in Ireland?
The median age in Ireland sits at approximately 39 years in 2026, several years younger than the EU average. Ireland remains among the younger countries in the European Union.
What is the life expectancy in Ireland?
Life expectancy at birth in Ireland stands at approximately 82.5 years overall, with women averaging approximately 84 years and men approximately 81 years.
Will Ireland’s population continue to grow?
Yes, projections show Ireland continuing to grow through 2100. The medium variant projects 6.1 million by 2050 and 6.4 million by 2100, supported by moderate fertility and sustained immigration.
Sources
- United Nations Department of Economic and Social Affairs, Population Division.
- World Population Prospects 2024 revision.
- Central Statistics Office (CSO) Ireland, Population Estimates and 2022 Census Results, 2024 and 2025 updates.
- World Bank Open Data, World Development Indicators, 2024 and 2025 updates.
- Department of Justice Ireland, International Protection Statistics 2024.
- Live national and county counters at worldpopulationclock.net.