Population by age groups in Belgium
Belgium: Population by age groups was 11.88 million in 2025. ▲ Rising
Population by age groups in Belgium, 1990–2025
Source: UNICEF.
Analysis
In 2025, population by age groups in Belgium stood at 11.88 million. That is the highest value across all 36 years on record.
The figure is up 0.6% on the previous year and up 5.8% over ten years.
Over the whole period, population by age groups in Belgium peaked at 11.88 million in 2025 and was at its lowest, 9.95 million, in 1990.
That places Belgium 24th 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 | 10.10 million | 9.95 million | 10.21 million | 10 |
| 2000s | 10.45 million | 10.24 million | 10.75 million | 10 |
| 2010s | 11.20 million | 10.84 million | 11.46 million | 10 |
| 2020s | 11.69 million | 11.52 million | 11.88 million | 6 |
Countries ranked near Belgium
More population data for Belgium
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 12,091 Persons (2050)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population 0.2011 Percent per annum (2030)
- Projected population under age 5, annual growth rate 0.0085 % change on previous year (2100)
- Population growth rate -0.166 (2100)
- Population density 365.29 (2100)
- Projected population under age 5 461,216 (2100)
- Population growth rate by level of development -0.166 (2100)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 0.2017 % change on previous year (2030)
- Fertility and wanted fertility, annual growth rate -2.04 % change on previous year (2024)
- Refugee population by country or territory of asylum, gaps filled 183,551 (2024)
Frequently asked questions
- What is population by age groups in Belgium?
- Population by age groups in Belgium was 11.88 million in 2025, according to UNICEF.
- What is the highest population by age groups recorded in Belgium?
- The highest recorded value was 11.88 million in 2025.
- What is the lowest population by age groups recorded in Belgium?
- The lowest recorded value was 9.95 million in 1990.
- How does Belgium rank for population by age groups?
- Belgium ranks 24th out of 74 countries with data for 2025.
- Is population by age groups rising or falling in Belgium?
- Over the last ten years it is up 5.8%. The long-run trend across the full record is rising.
- Where does this Belgium data come from?
- The figures come from UNICEF, published as part of Population by age groups. 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).