Braine-l’Alleud: population and statistics
Braine-l’Alleud has a population of 40,815 (2026) across 52.3 km², or 780 people per km². It ranks 51 of 565 municipalities by population. Its population is growing: +2.6% between 2016 and 2026.
- 40,815 residents
- 52.3 km²
- 780 people/km²
- 111 m
Key points
Among the 27 municipalities in Walloon Brabant, Braine-l’Alleud ranks No. 1 by population.
New dwellings authorised per year per 1,000 inhabitants: 1.36 ‰ inh. in Braine-l’Alleud, compared with an average of 2.52 ‰ inh. in Walloon Brabant and 4.28 ‰ inh. nationally.
Largest business sector: Professional, scientific and technical, with 24.1% of the area's businesses.
A 1 kWp solar panel tilted at 39° generates about 1,070 kWh a year here.
Did you know?
- Number 1 in Walloon Brabant for “Population”.
- “New dwellings authorised per year per 1,000 inhabitants”: lower than in 94% of municipalities.
- “VAT-liable enterprises”: higher than in 93% of municipalities.
- Its area is roughly equal to 7,328 football pitches.
- Its population density is 2.0 times the national average.
- The nearest municipality is Waterloo, 4.1 km away.
- The nearest more populous municipality is Uccle (87,548 residents), 14 km away.
Braine-l’Alleud in numbers
All indicators for Braine-l’Alleud
Value for the municipality, then the regional average and the national median (for counts: regional and national totals). The gauge places the municipality between the lowest and highest value in the country.
Population
| Indicator | Braine-l’Alleud | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants aged 65 and over (2026) | 22.5% | 21.6% | 21.7% | ranked 206 of 564 | |
| Share of inhabitants under 20 (2026) | 21.1% | 21.8% | 21.5% | ranked 334 of 564 |
Housing
| Indicator | Braine-l’Alleud | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings built before 1946 (2024) | 26.2% | – | 34.6% | ranked 357 of 564 | |
| Buildings built after 2001 (2024) | 11.0% | – | 15.3% | ranked 437 of 564 | |
| Share of houses in the building stock (2024) | 85.6% | – | 79.9% | ranked 44 of 564 | |
| Number of dwellings (2024) | 17,674 | 188,756 | 5,783,434 | ranked 64 of 565 | |
| New dwellings authorised per year per 1,000 inhabitants (2021-2025) | 1.36 ‰ inh. | 2.52 ‰ inh. | 4.39 ‰ inh. | ranked 530 of 564 |
Energy
| Indicator | Braine-l’Alleud | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Residential buildings with central heating or air conditioning (2024) | 88.6% | – | 76.7% | ranked 62 of 564 |
Economy
| Indicator | Braine-l’Alleud | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| VAT-liable enterprises (2024) | 4,484 | 50,462 | 1,170,010 | ranked 43 of 565 | |
| VAT-liable enterprises per 1,000 inhabitants (2024) | 109.9 ‰ inh. | 121.0 ‰ inh. | 102.2 ‰ inh. | ranked 214 of 564 | |
| Net taxable income per inhabitant (2023) | 26,956 € | 26,721 € | 24,247 € | ranked 102 of 564 | |
| Median disposable income (administrative) (2023) | 32,159 € | – | 30,830 € | ranked 144 of 551 | |
| Median selling price of houses (2025) | 415,000 € | – | 302,500 € | ranked 78 of 554 | |
| Median selling price of apartments (2025) | 290,000 € | – | 249,900 € | ranked 54 of 299 |
Transport
| Indicator | Braine-l’Alleud | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Cars per household (2025) | 1.27 | 1.30 | 1.25 | ranked 241 of 564 | |
| Households without a car (2025) | 18.6% | 18.5% | 17.6% | ranked 235 of 564 |
Society
| Indicator | Braine-l’Alleud | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants of foreign nationality (2026) | 11.6% | 10.7% | 6.4% | ranked 112 of 564 | |
| Administrative poverty risk (2023) | 7.0% | 8.3% | 7.0% | ranked 272 of 551 |
Population of Braine-l’Alleud over time
Braine-l’Alleud had 39,785 residents in 2016 and 40,815 in 2026.
| Year | Population |
|---|---|
| 2021 | 40,093 |
| 2022 | 40,346 |
| 2023 | 40,469 |
| 2024 | 40,461 |
| 2025 | 40,756 |
| 2026 | 40,815 |
Where is Braine-l’Alleud?
Business sectors: Braine-l’Alleud
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Professional, scientific and technical24.1% ×1.2
- Wholesale and retail trade15.6% ×1.0
- Construction10.3% ×0.8
- Information and communication8.6% ×1.5
- Administrative and support services7.4% ×1.1
- Health and social work5.5% ×1.2
- Other service activities5.1% ×0.8
- Manufacturing4.2% ×0.9
Sunshine and temperatures: Braine-l’Alleud
Frequently asked questions
What is the population of Braine-l’Alleud?
Braine-l’Alleud has 40,815 residents (2026), ranking 51 of 565 municipalities.
How big is Braine-l’Alleud?
Braine-l’Alleud covers 52.3 km², with a density of 780 people per km².
Is the population of Braine-l’Alleud growing?
Between 2016 and 2026, the population of Braine-l’Alleud went from 39,785 to 40,815, a change of +2.6%.
Where is Braine-l’Alleud?
Braine-l’Alleud is in Walloon Brabant. It belongs to Nivelles (arrondissement). Latitude 50.681, longitude 4.372.
New dwellings authorised per year per 1,000 inhabitants: what is the figure for Braine-l’Alleud?
In Braine-l’Alleud, “New dwellings authorised per year per 1,000 inhabitants” stands at 1.36 ‰ inh. (2021-2025), ranking 530 of 564 municipalities; the national median is 4.39 ‰ inh..
VAT-liable enterprises: what is the figure for Braine-l’Alleud?
In Braine-l’Alleud, “VAT-liable enterprises” stands at 4,484 (2024), ranking 43 of 565 municipalities; the national median is 1,324.
How much electricity does a solar panel produce in Braine-l’Alleud?
In Braine-l’Alleud, a 1 kWp south-facing system tilted at 39° produces about 1,070 kWh a year.
Which municipalities border Braine-l’Alleud?
The nearest to Braine-l’Alleud are Waterloo (4.1 km), Sint-Genesius-Rode (7.4 km), Braine-le-Château (7.4 km), Lasne (7.9 km), Ittre (8.1 km).
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