Watermael-Boitsfort: population and statistics
Watermael-Boitsfort has a population of 25,271 (2026) across 13.0 km², or 1,948 people per km². It ranks 122 of 565 municipalities by population. Its population is growing: +2.6% between 2016 and 2026.
- 25,271 residents
- 13.0 km²
- 1,948 people/km²
- 71 m
Key points
Among the 19 municipalities in Brussels-Capital, Watermael-Boitsfort ranks No. 18 by population.
Largest business sector: Professional, scientific and technical, with 42.3% of the area's businesses.
A 1 kWp solar panel tilted at 39° generates about 1,054 kWh a year here.
Did you know?
- Number 1 in Brussels-Capital for “Share of inhabitants aged 65 and over”.
- Number 1 in Brussels-Capital for “Share of houses in the building stock”.
- “Buildings built after 2001”: lower than in 99% of municipalities.
- “Median selling price of houses”: higher than in 98% of municipalities.
- “Cars per household”: lower than in 96% of municipalities.
- Its area is roughly equal to 1,817 football pitches.
- Its population density is 5.0 times the national average.
Watermael-Boitsfort in numbers
All indicators for Watermael-Boitsfort
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 | Watermael-Boitsfort | Brussels-Capital | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants aged 65 and over (2026) | 21.2% | 13.4% | 21.7% | ranked 330 of 564 | |
| Share of inhabitants under 20 (2026) | 21.6% | 23.5% | 21.5% | ranked 271 of 564 |
Housing
| Indicator | Watermael-Boitsfort | Brussels-Capital | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings built before 1946 (2024) | 64.2% | – | 34.6% | ranked 14 of 564 | |
| Buildings built after 2001 (2024) | 1.4% | – | 15.3% | ranked 560 of 564 | |
| Share of houses in the building stock (2024) | 83.8% | – | 79.9% | ranked 89 of 564 | |
| Number of dwellings (2024) | 12,244 | 606,437 | 5,783,434 | ranked 117 of 565 | |
| New dwellings authorised per year per 1,000 inhabitants (2021-2025) | 3.05 ‰ inh. | 2.67 ‰ inh. | 4.39 ‰ inh. | ranked 411 of 564 |
Energy
| Indicator | Watermael-Boitsfort | Brussels-Capital | National | Position | Rank |
|---|---|---|---|---|---|
| Residential buildings with central heating or air conditioning (2024) | 85.7% | – | 76.7% | ranked 114 of 564 |
Economy
| Indicator | Watermael-Boitsfort | Brussels-Capital | National | Position | Rank |
|---|---|---|---|---|---|
| VAT-liable enterprises (2024) | 3,307 | 122,725 | 1,170,010 | ranked 81 of 565 | |
| VAT-liable enterprises per 1,000 inhabitants (2024) | 130.9 ‰ inh. | 97.7 ‰ inh. | 102.2 ‰ inh. | ranked 64 of 564 | |
| Net taxable income per inhabitant (2023) | 24,951 € | 18,524 € | 24,247 € | ranked 240 of 564 | |
| Median disposable income (administrative) (2023) | 29,680 € | – | 30,830 € | ranked 385 of 551 | |
| Median selling price of houses (2025) | 599,000 € | – | 302,500 € | ranked 13 of 554 | |
| Median selling price of apartments (2025) | 335,000 € | – | 249,900 € | ranked 15 of 299 |
Transport
| Indicator | Watermael-Boitsfort | Brussels-Capital | National | Position | Rank |
|---|---|---|---|---|---|
| Cars per household (2025) | 0.80 | 0.54 | 1.25 | ranked 541 of 564 | |
| Households without a car (2025) | 38.3% | 56.4% | 17.6% | ranked 24 of 564 |
Society
| Indicator | Watermael-Boitsfort | Brussels-Capital | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants of foreign nationality (2026) | 21.5% | 36.7% | 6.4% | ranked 43 of 564 | |
| Administrative poverty risk (2023) | 13.1% | 21.7% | 7.0% | ranked 61 of 551 |
Population of Watermael-Boitsfort over time
Watermael-Boitsfort had 24,619 residents in 2016 and 25,271 in 2026.
| Year | Population |
|---|---|
| 2021 | 25,221 |
| 2022 | 25,187 |
| 2023 | 25,392 |
| 2024 | 25,295 |
| 2025 | 25,327 |
| 2026 | 25,271 |
Where is Watermael-Boitsfort?
Business sectors: Watermael-Boitsfort
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Professional, scientific and technical42.3% ×2.1
- Information and communication9.2% ×1.6
- Wholesale and retail trade8.9% ×0.6
- Construction6.0% ×0.4
- Real estate5.6% ×1.8
- Administrative and support services5.2% ×0.8
- Health and social work4.0% ×0.9
- Arts, entertainment and recreation3.4% ×0.9
Sunshine and temperatures: Watermael-Boitsfort
Frequently asked questions
What is the population of Watermael-Boitsfort?
Watermael-Boitsfort has 25,271 residents (2026), ranking 122 of 565 municipalities.
How big is Watermael-Boitsfort?
Watermael-Boitsfort covers 13.0 km², with a density of 1,948 people per km².
Is the population of Watermael-Boitsfort growing?
Between 2016 and 2026, the population of Watermael-Boitsfort went from 24,619 to 25,271, a change of +2.6%.
Where is Watermael-Boitsfort?
Watermael-Boitsfort is in Brussels-Capital. It belongs to Bruxelles-Capitale (arrondissement). Latitude 50.798, longitude 4.418.
Buildings built after 2001: what is the figure for Watermael-Boitsfort?
In Watermael-Boitsfort, “Buildings built after 2001” stands at 1.4% (2024), ranking 560 of 564 municipalities; the national median is 15.3%.
Median selling price of houses: what is the figure for Watermael-Boitsfort?
In Watermael-Boitsfort, “Median selling price of houses” stands at 599,000 € (2025), ranking 13 of 554 municipalities; the national median is 302,500 €.
How much electricity does a solar panel produce in Watermael-Boitsfort?
In Watermael-Boitsfort, a 1 kWp south-facing system tilted at 39° produces about 1,054 kWh a year.
Which municipalities border Watermael-Boitsfort?
The nearest to Watermael-Boitsfort are Auderghem (2.2 km), Woluwe-Saint-Pierre (4.4 km), Etterbeek (4.8 km), Hoeilaart (4.9 km), Woluwe-Saint-Lambert (5.1 km).
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