Population by age in United Kingdom of Great Britain and Northern Ireland
United Kingdom of Great Britain and Northern Ireland: Population by age was 69.55 million in 2025. ▲ Rising
Population by age in United Kingdom of Great Britain and Northern Ireland, 2000–2025
Source: UNICEF.
Analysis
United Kingdom of Great Britain and Northern Ireland recorded 69.55 million for population by age in 2025. That is the highest value across all 26 years on record.
The figure is up 0.6% on the previous year and up 6.4% over ten years.
Over the whole period, population by age in United Kingdom of Great Britain and Northern Ireland peaked at 69.55 million in 2025 and was at its lowest, 59.06 million, in 2000.
That places United Kingdom of Great Britain and Northern Ireland 6th out of 74 countries with data for 2025, putting it in the top 10%.
The long-run direction has been consistently rising across the 26 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 60.56 million | 59.06 million | 62.51 million | 10 |
| 2010s | 65.12 million | 63.01 million | 67.11 million | 10 |
| 2020s | 68.43 million | 67.35 million | 69.55 million | 6 |
Countries ranked near United Kingdom of Great Britain and Northern Ireland
More population data for United Kingdom of Great Britain and Northern Ireland
- Population growth rate by level of development -0.184 (2100)
- Projected population under age 5 3.21 million (2100)
- Population density 307.14 (2100)
- Population growth rate -0.184 (2100)
- Projected population under age 5, annual growth rate -0.169 % change on previous year (2100)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population 0.2666 Percent per annum (2030)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 71,685 Persons (2050)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 0.2667 % change on previous year (2030)
- Fertility and wanted fertility 1.55 (2024)
- Refugee population by country or territory of asylum 515,677 (2024)
All data for United Kingdom of Great Britain and Northern Ireland →
Frequently asked questions
- What is population by age in United Kingdom of Great Britain and Northern Ireland?
- Population by age in United Kingdom of Great Britain and Northern Ireland was 69.55 million in 2025, according to UNICEF.
- What is the highest population by age recorded in United Kingdom of Great Britain and Northern Ireland?
- The highest recorded value was 69.55 million in 2025.
- What is the lowest population by age recorded in United Kingdom of Great Britain and Northern Ireland?
- The lowest recorded value was 59.06 million in 2000.
- How does United Kingdom of Great Britain and Northern Ireland rank for population by age?
- United Kingdom of Great Britain and Northern Ireland ranks 6th out of 74 countries with data for 2025.
- Is population by age rising or falling in United Kingdom of Great Britain and Northern Ireland?
- Over the last ten years it is up 6.4%. The long-run trend across the full record is rising.
- Where does this United Kingdom of Great Britain and Northern 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 — 26 observations, free to reuse under UNICEF Terms of Use (attribution required).