Ireland Population Pyramid 2001
Ireland in 2001
In 2001, Ireland had a total population of 3,862,981 people. Over the previous ten years the population grew by 9.3%, up from 3,534,260 in 1991.
With a median age of 32.7 years, Ireland had a youth dependency ratio of 31.8 and an old-age dependency ratio of 16.5 per 100 people of working age. 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 | 3,862,981 | 32.7 | |
| Lithuania | 3,473,004 | 36.4 | |
| Norway | 4,513,657 | 37.1 | |
| Finland | 5,187,971 | 39.7 | |
| Denmark | 5,358,828 | 38.6 |





