In 2023, the population of Belgium numbered around 11.7 million. Most of these inhabitants lived in the Dutch-speaking Flemish Region, which was home to nearly half of Belgium’s population. The Walloon Region, broadly in line with the French-speaking part of Belgium, numbered roughly 3.68 million inhabitants, and another 1.24 million lived in Brussels and the surrounding areas (which are bilingual).  

 Population density by region 

Despite having the lowest number of inhabitants, the Brussels-Capital Region had the highest population density, at nearly 7,400 inhabitants per square kilometer in 2017. By comparison, this was less than 500 inhabitants in Flanders and just 214 in Wallonia.  

GDP per region  

Wallonia was not just the region with the lowest number of inhabitants per square kilometer, it also had the lowest GDP per capita. In 2019, the most recent available year, GDP per capita reached 30,236 euros in this region. In contrast, GDP per capita was nearly 2.5 times as high in Brussels, at 71,412 euros per capita.

Belgium population data 2022 at municipality level - 740+ attributes: gender, age bands, marital status, nationality, and more

The statistic shows the population of Belgium in 2023, by age class and gender. In 2023, most Belgians were aged 55 to 59 years old. During that year, 402,000 male inhabitants were aged between 55 and 59 years old and 397,000 women.

Belgium Population: Brussels: Age: 0 to 19 data was reported at 239,819.000 Person in 2004. This records an increase from the previous number of 236,920.000 Person for 2003. Belgium Population: Brussels: Age: 0 to 19 data is updated yearly, averaging 222,126.500 Person from Dec 1989 (Median) to 2004, with 16 observations. The data reached an all-time high of 239,819.000 Person in 2004 and a record low of 218,338.000 Person in 1993. Belgium Population: Brussels: Age: 0 to 19 data remains active status in CEIC and is reported by Directorate-General Statistics - Statistics Belgium. The data is categorized under Global Database’s Belgium – Table BE.G001: Population. Changed data scope Replacement series ID: 403966247

The total population in Belgium was estimated at 11.9 million people in 2025, according to the latest census figures and projections from Trading Economics. This dataset provides - Belgium Population - actual values, historical data, forecast, chart, statistics, economic calendar and news.

Belgium Population: Age: 20 to 64 data was reported at 6,232,311.000 Person in 2004. This records an increase from the previous number of 6,207,845.000 Person for 2003. Belgium Population: Age: 20 to 64 data is updated yearly, averaging 6,088,507.500 Person from Dec 1989 (Median) to 2004, with 16 observations. The data reached an all-time high of 6,232,311.000 Person in 2004 and a record low of 6,002,620.000 Person in 1989. Belgium Population: Age: 20 to 64 data remains active status in CEIC and is reported by Directorate-General Statistics - Statistics Belgium. The data is categorized under Global Database’s Belgium – Table BE.G001: Population. Changed data scope Replacement series ID: 403966167

Belgium Population: Brussels: Age: 65 and Above data was reported at 163,123.000 Person in 2023. This records an increase from the previous number of 161,548.000 Person for 2022. Belgium Population: Brussels: Age: 65 and Above data is updated yearly, averaging 158,669.000 Person from Dec 1989 (Median) to 2023, with 35 observations. The data reached an all-time high of 167,331.000 Person in 1989 and a record low of 151,609.000 Person in 2008. Belgium Population: Brussels: Age: 65 and Above data remains active status in CEIC and is reported by Directorate-General Statistics - Statistics Belgium. The data is categorized under Global Database’s Belgium – Table BE.G001: Population.

Belgium Population: Brussels: Male: Age: 0 to 19 data was reported at 122,188.000 Person in 2004. This records an increase from the previous number of 120,708.000 Person for 2003. Belgium Population: Brussels: Male: Age: 0 to 19 data is updated yearly, averaging 113,359.500 Person from Dec 1989 (Median) to 2004, with 16 observations. The data reached an all-time high of 122,188.000 Person in 2004 and a record low of 111,180.000 Person in 1993. Belgium Population: Brussels: Male: Age: 0 to 19 data remains active status in CEIC and is reported by Directorate-General Statistics - Statistics Belgium. The data is categorized under Global Database’s Belgium – Table BE.G001: Population. Changed data scope Replacement series ID: 403966277

About this dataset

Context

The dataset tabulates the data for the Belgium, WI population pyramid, which represents the Belgium population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates. It lists the male and female population for each age group, along with the total population for those age groups. Higher numbers at the bottom of the table suggest population growth, whereas higher numbers at the top indicate declining birth rates. Furthermore, the dataset can be utilized to understand the youth dependency ratio, old-age dependency ratio, total dependency ratio, and potential support ratio.

Key observations

• Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Belgium, WI, is 18.5.
• Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Belgium, WI, is 41.1.
• Total dependency ratio for Belgium, WI is 59.6.
• Potential support ratio, which is the number of youth (working age population) per elderly, for Belgium, WI is 2.4.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates.

Age groups:

• Under 5 years
• 5 to 9 years
• 10 to 14 years
• 15 to 19 years
• 20 to 24 years
• 25 to 29 years
• 30 to 34 years
• 35 to 39 years
• 40 to 44 years
• 45 to 49 years
• 50 to 54 years
• 55 to 59 years
• 60 to 64 years
• 65 to 69 years
• 70 to 74 years
• 75 to 79 years
• 80 to 84 years
• 85 years and over

Variables / Data Columns

• Age Group: This column displays the age group for the Belgium population analysis. Total expected values are 18 and are define above in the age groups section.
• Population (Male): The male population in the Belgium for the selected age group is shown in the following column.
• Population (Female): The female population in the Belgium for the selected age group is shown in the following column.
• Total Population: The total population of the Belgium for the selected age group is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Belgium Population by Age. You can refer the same here

This statistic displays the population of Belgium in 2023, by gender and region. In 2023, about 3.42 million female inhabitants lived in the Flemish Region, approximately 633,000 women lived in the Brussels-Capital Region, and roughly 1.88 million women lived in the Walloon Region.

Comprehensive socio-economic dataset for Belgium including population demographics, economic indicators, geographic data, and social statistics. This dataset covers key metrics such as GDP, population density, area, capital city, and regional classifications.

In 2023, approximately 2.34 million people in Belgium were younger than 18, while roughly 2.31 million Belgian inhabitants were aged 65 years and older. In that year, most of the Belgian population was aged between 18 and 64 years old.

Historical dataset showing total population for Belgium by year from 1950 to 2025.

Belgium Population: Walloon: Age: 65 and Above data was reported at 733,117.000 Person in 2023. This records an increase from the previous number of 718,838.000 Person for 2022. Belgium Population: Walloon: Age: 65 and Above data is updated yearly, averaging 568,763.000 Person from Dec 1989 (Median) to 2023, with 35 observations. The data reached an all-time high of 733,117.000 Person in 2023 and a record low of 490,481.000 Person in 1989. Belgium Population: Walloon: Age: 65 and Above data remains active status in CEIC and is reported by Directorate-General Statistics - Statistics Belgium. The data is categorized under Global Database’s Belgium – Table BE.G001: Population.

Actual value and historical data chart for Belgium Population Growth Annual Percent

Belgium BE: Population: Male: Ages 35-39: % of Male Population data was reported at 6.511 % in 2023. This records an increase from the previous number of 6.503 % for 2022. Belgium BE: Population: Male: Ages 35-39: % of Male Population data is updated yearly, averaging 7.080 % from Dec 1960 (Median) to 2023, with 64 observations. The data reached an all-time high of 8.208 % in 2000 and a record low of 5.828 % in 1978. Belgium BE: Population: Male: Ages 35-39: % of Male Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Belgium – Table BE.World Bank.WDI: Population and Urbanization Statistics. Male population between the ages 35 to 39 as a percentage of the total male population.;United Nations Population Division. World Population Prospects: 2024 Revision.;;

Belgium - Population was 11817096.00 in December of 2024, according to the EUROSTAT. Trading Economics provides the current actual value, an historical data chart and related indicators for Belgium - Population - last updated from the EUROSTAT on November of 2025. Historically, Belgium - Population reached a record high of 11817096.00 in December of 2024 and a record low of 9128824.00 in December of 1960.

Belgium - Proportion of population aged 0-14 years was 16.30% in December of 2024, according to the EUROSTAT. Trading Economics provides the current actual value, an historical data chart and related indicators for Belgium - Proportion of population aged 0-14 years - last updated from the EUROSTAT on December of 2025. Historically, Belgium - Proportion of population aged 0-14 years reached a record high of 17.00% in December of 2018 and a record low of 16.30% in December of 2024.

Population ages 15-64, total in Belgium was reported at 7535358 Persons in 2024, according to the World Bank collection of development indicators, compiled from officially recognized sources. Belgium - Population ages 15-64, total - actual values, historical data, forecasts and projections were sourced from the World Bank on November of 2025.

About this dataset

Context

The dataset tabulates the Belgium population distribution across 18 age groups. It lists the population in each age group along with the percentage population relative of the total population for Belgium. The dataset can be utilized to understand the population distribution of Belgium by age. For example, using this dataset, we can identify the largest age group in Belgium.

Key observations

The largest age group in Belgium, WI was for the group of age 70 to 74 years years with a population of 457 (17.26%), according to the ACS 2019-2023 5-Year Estimates. At the same time, the smallest age group in Belgium, WI was the 80 to 84 years years with a population of 32 (1.21%). Source: U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates

Age groups:

• Under 5 years
• 5 to 9 years
• 10 to 14 years
• 15 to 19 years
• 20 to 24 years
• 25 to 29 years
• 30 to 34 years
• 35 to 39 years
• 40 to 44 years
• 45 to 49 years
• 50 to 54 years
• 55 to 59 years
• 60 to 64 years
• 65 to 69 years
• 70 to 74 years
• 75 to 79 years
• 80 to 84 years
• 85 years and over

Variables / Data Columns

• Age Group: This column displays the age group in consideration
• Population: The population for the specific age group in the Belgium is shown in this column.
• % of Total Population: This column displays the population of each age group as a proportion of Belgium total population. Please note that the sum of all percentages may not equal one due to rounding of values.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Belgium Population by Age. You can refer the same here