Mont-Saint-Guibert: population and statistics
Mont-Saint-Guibert has a population of 8,503 (2026) across 18.7 km², or 454 people per km². It ranks 398 of 565 municipalities by population. Its population is growing: +15.5% between 2016 and 2026.
- 8,503 residents
- 18.7 km²
- 454 people/km²
- 89 m
Key points
Among the 27 municipalities in Walloon Brabant, Mont-Saint-Guibert ranks No. 19 by population.
VAT-liable enterprises per 1,000 inhabitants: 145.0 ‰ inh. in Mont-Saint-Guibert, compared with an average of 121.0 ‰ inh. in Walloon Brabant and 98.6 ‰ inh. nationally.
Largest business sector: Professional, scientific and technical, with 25.8% of the area's businesses.
A 1 kWp solar panel tilted at 39° generates about 1,082 kWh a year here.
Did you know?
- “VAT-liable enterprises per 1,000 inhabitants”: higher than in 95% of municipalities.
- “Buildings built after 2001”: higher than in 94% of municipalities.
- Its area is roughly equal to 2,622 football pitches.
- The nearest municipality is Court-Saint-Etienne, 3.5 km away.
- The nearest more populous municipality is Ottignies-Louvain-la-Neuve (31,823 residents), 4.2 km away.
- A 4 kWp rooftop solar system here would generate about 4,328 kWh a year, roughly what an average household uses.
Mont-Saint-Guibert in numbers
All indicators for Mont-Saint-Guibert
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 | Mont-Saint-Guibert | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants aged 65 and over (2026) | 18.3% | 21.6% | 21.7% | ranked 497 of 564 | |
| Share of inhabitants under 20 (2026) | 22.5% | 21.8% | 21.5% | ranked 165 of 564 |
Housing
| Indicator | Mont-Saint-Guibert | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings built before 1946 (2024) | 33.2% | – | 34.6% | ranked 298 of 564 | |
| Buildings built after 2001 (2024) | 22.0% | – | 15.3% | ranked 32 of 564 | |
| Share of houses in the building stock (2024) | 82.4% | – | 79.9% | ranked 148 of 564 | |
| Number of dwellings (2024) | 3,773 | 188,756 | 5,783,434 | ranked 408 of 565 | |
| New dwellings authorised per year per 1,000 inhabitants (2021-2025) | 5.62 ‰ inh. | 2.52 ‰ inh. | 4.39 ‰ inh. | ranked 168 of 564 |
Energy
| Indicator | Mont-Saint-Guibert | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Residential buildings with central heating or air conditioning (2024) | 85.5% | – | 76.7% | ranked 117 of 564 |
Economy
| Indicator | Mont-Saint-Guibert | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| VAT-liable enterprises (2024) | 1,233 | 50,462 | 1,170,010 | ranked 306 of 565 | |
| VAT-liable enterprises per 1,000 inhabitants (2024) | 145.0 ‰ inh. | 121.0 ‰ inh. | 102.2 ‰ inh. | ranked 29 of 564 | |
| Net taxable income per inhabitant (2023) | 27,638 € | 26,721 € | 24,247 € | ranked 73 of 564 | |
| Median disposable income (administrative) (2023) | 32,964 € | – | 30,830 € | ranked 78 of 551 | |
| Median selling price of houses (2025) | 395,000 € | – | 302,500 € | ranked 104 of 554 | |
| Median selling price of apartments (2025) | 279,000 € | – | 249,900 € | ranked 78 of 299 |
Transport
| Indicator | Mont-Saint-Guibert | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Cars per household (2025) | 1.31 | 1.30 | 1.25 | ranked 167 of 564 | |
| Households without a car (2025) | 15.5% | 18.5% | 17.6% | ranked 410 of 564 |
Society
| Indicator | Mont-Saint-Guibert | Walloon Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants of foreign nationality (2026) | 7.2% | 10.7% | 6.4% | ranked 237 of 564 | |
| Administrative poverty risk (2023) | 7.0% | 8.3% | 7.0% | ranked 272 of 551 |
Population of Mont-Saint-Guibert over time
Mont-Saint-Guibert had 7,364 residents in 2016 and 8,503 in 2026.
| Year | Population |
|---|---|
| 2021 | 7,940 |
| 2022 | 8,081 |
| 2023 | 8,361 |
| 2024 | 8,407 |
| 2025 | 8,451 |
| 2026 | 8,503 |
Where is Mont-Saint-Guibert?
Business sectors: Mont-Saint-Guibert
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Professional, scientific and technical25.8% ×1.3
- Wholesale and retail trade12.3% ×0.8
- Information and communication10.7% ×1.9
- Construction8.8% ×0.6
- Administrative and support services8.2% ×1.3
- Health and social work6.2% ×1.3
- Education4.3% ×1.8
- Manufacturing4.1% ×0.9
Sunshine and temperatures: Mont-Saint-Guibert
Frequently asked questions
What is the population of Mont-Saint-Guibert?
Mont-Saint-Guibert has 8,503 residents (2026), ranking 398 of 565 municipalities.
How big is Mont-Saint-Guibert?
Mont-Saint-Guibert covers 18.7 km², with a density of 454 people per km².
Is the population of Mont-Saint-Guibert growing?
Between 2016 and 2026, the population of Mont-Saint-Guibert went from 7,364 to 8,503, a change of +15.5%.
Where is Mont-Saint-Guibert?
Mont-Saint-Guibert is in Walloon Brabant. It belongs to Nivelles (arrondissement). Latitude 50.633, longitude 4.617.
VAT-liable enterprises per 1,000 inhabitants: what is the figure for Mont-Saint-Guibert?
In Mont-Saint-Guibert, “VAT-liable enterprises per 1,000 inhabitants” stands at 145.0 ‰ inh. (2024), ranking 29 of 564 municipalities; the national median is 102.2 ‰ inh..
Buildings built after 2001: what is the figure for Mont-Saint-Guibert?
In Mont-Saint-Guibert, “Buildings built after 2001” stands at 22.0% (2024), ranking 32 of 564 municipalities; the national median is 15.3%.
How much electricity does a solar panel produce in Mont-Saint-Guibert?
In Mont-Saint-Guibert, a 1 kWp south-facing system tilted at 39° produces about 1,082 kWh a year.
Which municipalities border Mont-Saint-Guibert?
The nearest to Mont-Saint-Guibert are Court-Saint-Etienne (3.5 km), Walhain (3.7 km), Chastre (3.9 km), Ottignies-Louvain-la-Neuve (4.2 km), Chaumont-Gistoux (7.9 km).
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