Population by age in Ireland
Ireland: Population by age was 5.44 million in 2025. ▲ Rising
Population by age in Ireland, 1990–2025
Source: UNICEF.
Analysis
The most recent figure for population by age in Ireland is 5.44 million, measured in 2025. That is the highest value across all 36 years on record.
That represents a change of up 1.7% on the previous year and up 16.3% over ten years.
Over the whole period, population by age in Ireland peaked at 5.44 million in 2025 and was at its lowest, 3.51 million, in 1990.
That places Ireland 48th out of 74 countries with data for 2025, putting it in the middle of the range.
The long-run direction has been consistently rising across the 36 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 3.60 million | 3.51 million | 3.73 million | 10 |
| 2000s | 4.11 million | 3.78 million | 4.52 million | 10 |
| 2010s | 4.70 million | 4.55 million | 4.94 million | 10 |
| 2020s | 5.22 million | 5.01 million | 5.44 million | 6 |
Countries ranked near Ireland
More population data for Ireland
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 5,725 Persons (2050)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population 0.5372 Percent per annum (2030)
- Projected population under age 5, annual growth rate -0.1844 % change on previous year (2100)
- Population growth rate -0.455 (2100)
- Population density 76.73 (2100)
- Projected population under age 5 217,052 (2100)
- Population growth rate by level of development -0.455 (2100)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 0.5372 % change on previous year (2030)
- Fertility and wanted fertility, annual growth rate -2 % change on previous year (2024)
- Refugee population by country or territory of asylum, gaps filled 124,730 (2024)
Frequently asked questions
- What is population by age in Ireland?
- Population by age in Ireland was 5.44 million in 2025, according to UNICEF.
- What is the highest population by age recorded in Ireland?
- The highest recorded value was 5.44 million in 2025.
- What is the lowest population by age recorded in Ireland?
- The lowest recorded value was 3.51 million in 1990.
- How does Ireland rank for population by age?
- Ireland ranks 48th out of 74 countries with data for 2025.
- Is population by age rising or falling in Ireland?
- Over the last ten years it is up 16.3%. The long-run trend across the full record is rising.
- Where does this Ireland data come from?
- The figures come from UNICEF, published as part of Population by age. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 36 observations, free to reuse under UNICEF Terms of Use (attribution required).