Ireland Population Pyramid 1991
Ireland in 1991
In 1991, Ireland had a total population of 3,534,260 people. Over the previous ten years the population grew by 2.5%, up from 3,448,826 in 1981.
The median age was 29.6 years, and for every 100 people of working age (15–64) there were 42.8 children under 15 and 18.4 people aged 65 or over. The pyramid is stationary: cohort sizes are roughly even through the younger ages, reflecting fertility close to replacement level and slow population change.
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 | 3,534,260 | 29.6 | |
| Lithuania | 3,701,408 | 32.9 | |
| Norway | 4,261,623 | 35.5 | |
| Latvia | 2,648,940 | 34.8 | |
| Finland | 5,013,880 | 36.7 |





