Historical population data in Ireland
Ireland: Historical population data was 5.46 million Persons in 2025. β² Rising
Historical population data in Ireland, 1950β2025
Source: Organisation for Economic Co-operation and Development. Measured in Persons.
Analysis
The most recent figure for historical population data in Ireland is 5.46 million Persons, measured in 2025. That is the highest value across all 76 years on record.
That represents a change of up 1.5% on the previous year and up 16.4% over ten years.
Over the whole period, historical population data in Ireland peaked at 5.46 million Persons in 2025 and was at its lowest, 2.82 million Persons, in 1961.
That places Ireland 36th out of 43 countries with data for 2025, putting it in the bottom quarter.
The long-run direction has been consistently rising across the 76 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 2.92 million Persons | 2.85 million Persons | 2.97 million Persons | 10 |
| 1960s | 2.87 million Persons | 2.82 million Persons | 2.93 million Persons | 10 |
| 1970s | 3.15 million Persons | 2.95 million Persons | 3.37 million Persons | 10 |
| 1980s | 3.50 million Persons | 3.40 million Persons | 3.55 million Persons | 10 |
| 1990s | 3.61 million Persons | 3.51 million Persons | 3.74 million Persons | 10 |
| 2000s | 4.13 million Persons | 3.79 million Persons | 4.53 million Persons | 10 |
| 2010s | 4.71 million Persons | 4.55 million Persons | 4.96 million Persons | 10 |
| 2020s | 5.23 million Persons | 5.03 million Persons | 5.46 million Persons | 6 |
Countries ranked near Ireland
More population data for Ireland
- Population growth rate by level of development -0.455 (2100)
- Projected population under age 5 217,052 (2100)
- Population density 76.73 (2100)
- Population growth rate -0.455 (2100)
- Projected population under age 5, annual growth rate -0.1844 % change on previous year (2100)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population 0.5372 Percent per annum (2030)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 5,725 Persons (2050)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 0.5372 % change on previous year (2030)
- Fertility and wanted fertility 1.47 (2024)
- Refugee population by country or territory of asylum 124,730 (2024)
Frequently asked questions
- What is historical population data in Ireland?
- Historical population data in Ireland was 5.46 million Persons in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest historical population data recorded in Ireland?
- The highest recorded value was 5.46 million Persons in 2025.
- What is the lowest historical population data recorded in Ireland?
- The lowest recorded value was 2.82 million Persons in 1961.
- How does Ireland rank for historical population data?
- Ireland ranks 36th out of 43 countries with data for 2025.
- Is historical population data rising or falling in Ireland?
- Over the last ten years it is up 16.4%. The long-run trend across the full record is rising.
- Where does this Ireland data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Historical population data. Statizoid updates them automatically from the source API.
Download this data
CSV Β· JSON β 76 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset presents annual population data from 1961 by sex and five year age groups as well as the share of children, youth, the elderly, old-age and total dependency ratios. The data is available for all member countries as well as for the EU27 and G20 countries, Argentina, Brazil, China, India, Indonesia, Russia, Saudi Arabia, Singapore, South Africa and the World total. The data refer to mid-year estimates of the population. See country details in Historical population metadata.