Ireland Population Pyramid 2031
Ireland in 2031
By 2031, the population of Ireland is expected to reach 5,560,659. That would be 10.6% more than in 2021 (5,028,425).
Half of the population would be younger than 41.0 years, with 16.0% children under 15 and 18.3% aged 65 or older. The narrow base of the pyramid marks a constrictive age structure: fertility below replacement level and a rising share of older people.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
The fertility rate of Ireland was 1.50 births per woman in 2023, under the 2.1 needed to replace each generation.
Source: World Bank World Development Indicators, latest available year.
Life expectancy at birth was 82.9 years in 2023: 84.5 for women and 81.3 for men.
Source: World Bank World Development Indicators, latest available year.
1,034,444 immigrants live in Ireland, 19.7% of the population.
| United Kingdom | 293,559 |
| Ukraine | 125,016 |
| Poland | 102,708 |
| India | 70,228 |
| Brazil | 48,605 |
712,129 people born in Ireland live in other countries.
| United Kingdom | 360,446 |
| United States of America | 125,844 |
| Australia | 90,203 |
| Poland | 34,300 |
| Canada | 28,912 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| Ireland | 5,560,659 | 41.0 | |
| Finland | 5,582,720 | 45.5 | |
| Norway | 5,745,652 | 42.6 | |
| Denmark | 6,091,944 | 42.8 | |
| Lithuania | 2,684,470 | 45.1 |





