Kortenberg: population and statistics
Kortenberg has a population of 21,425 (2026) across 34.7 km², or 617 people per km². It ranks 156 of 565 municipalities by population. Its population is growing: +8.7% between 2016 and 2026.
- 21,425 residents
- 34.7 km²
- 617 people/km²
- 47 m
Key points
Among the 63 municipalities in Flemish Brabant, Kortenberg ranks No. 19 by population.
Largest business sector: Professional, scientific and technical, with 23.4% of the area's businesses.
A 1 kWp solar panel tilted at 39° generates about 1,076 kWh a year here.
Did you know?
- “Residential buildings with central heating or air conditioning”: higher than in 94% of municipalities.
- “Median disposable income (administrative)”: higher than in 93% of municipalities.
- Its area is roughly equal to 4,860 football pitches.
- The nearest municipality is Steenokkerzeel, 4.3 km away.
- The nearest more populous municipality is Zaventem (37,518 residents), 4.7 km away.
- A 4 kWp rooftop solar system here would generate about 4,304 kWh a year, roughly what an average household uses.
Kortenberg in numbers
All indicators for Kortenberg
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 | Kortenberg | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants aged 65 and over (2026) | 20.7% | 20.8% | 21.7% | ranked 361 of 564 | |
| Share of inhabitants under 20 (2026) | 23.4% | 22.6% | 21.5% | ranked 83 of 564 |
Housing
| Indicator | Kortenberg | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings built before 1946 (2024) | 22.9% | – | 34.6% | ranked 411 of 564 | |
| Buildings built after 2001 (2024) | 17.4% | – | 15.3% | ranked 191 of 564 | |
| Share of houses in the building stock (2024) | 84.5% | – | 79.9% | ranked 70 of 564 | |
| Number of dwellings (2024) | 8,995 | 542,504 | 5,783,434 | ranked 180 of 565 | |
| New dwellings authorised per year per 1,000 inhabitants (2021-2025) | 3.45 ‰ inh. | 4.02 ‰ inh. | 4.39 ‰ inh. | ranked 373 of 564 |
Energy
| Indicator | Kortenberg | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Residential buildings with central heating or air conditioning (2024) | 91.1% | – | 76.7% | ranked 29 of 564 |
Economy
| Indicator | Kortenberg | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| VAT-liable enterprises (2024) | 2,046 | 130,833 | 1,170,010 | ranked 166 of 565 | |
| VAT-liable enterprises per 1,000 inhabitants (2024) | 95.5 ‰ inh. | 108.1 ‰ inh. | 102.2 ‰ inh. | ranked 352 of 564 | |
| Net taxable income per inhabitant (2023) | 28,569 € | 26,927 € | 24,247 € | ranked 46 of 564 | |
| Median disposable income (administrative) (2023) | 33,906 € | – | 30,830 € | ranked 38 of 551 | |
| Median selling price of houses (2025) | 455,000 € | – | 302,500 € | ranked 48 of 554 | |
| Median selling price of apartments (2025) | 312,500 € | – | 249,900 € | ranked 29 of 299 |
Transport
| Indicator | Kortenberg | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Cars per household (2025) | 1.28 | 1.20 | 1.25 | ranked 217 of 564 | |
| Households without a car (2025) | 18.8% | 21.3% | 17.6% | ranked 226 of 564 |
Society
| Indicator | Kortenberg | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants of foreign nationality (2026) | 12.5% | 11.9% | 6.4% | ranked 104 of 564 | |
| Administrative poverty risk (2023) | 5.2% | 6.8% | 7.0% | ranked 431 of 551 |
Population of Kortenberg over time
Kortenberg had 19,714 residents in 2016 and 21,425 in 2026.
| Year | Population |
|---|---|
| 2021 | 20,425 |
| 2022 | 20,462 |
| 2023 | 20,920 |
| 2024 | 21,165 |
| 2025 | 21,386 |
| 2026 | 21,425 |
Where is Kortenberg?
Business sectors: Kortenberg
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Professional, scientific and technical23.4% ×1.2
- Wholesale and retail trade12.4% ×0.8
- Construction11.9% ×0.9
- Administrative and support services8.6% ×1.3
- Information and communication8.4% ×1.5
- Other service activities7.1% ×1.1
- Health and social work5.0% ×1.1
- Arts, entertainment and recreation4.6% ×1.2
Sunshine and temperatures: Kortenberg
Frequently asked questions
What is the population of Kortenberg?
Kortenberg has 21,425 residents (2026), ranking 156 of 565 municipalities.
How big is Kortenberg?
Kortenberg covers 34.7 km², with a density of 617 people per km².
Is the population of Kortenberg growing?
Between 2016 and 2026, the population of Kortenberg went from 19,714 to 21,425, a change of +8.7%.
Where is Kortenberg?
Kortenberg is in Flemish Brabant. It belongs to Leuven (arrondissement). Latitude 50.883, longitude 4.533.
Residential buildings with central heating or air conditioning: what is the figure for Kortenberg?
In Kortenberg, “Residential buildings with central heating or air conditioning” stands at 91.1% (2024), ranking 29 of 564 municipalities; the national median is 76.7%.
Median disposable income (administrative): what is the figure for Kortenberg?
In Kortenberg, “Median disposable income (administrative)” stands at 33,906 € (2023), ranking 38 of 551 municipalities; the national median is 30,830 €.
How much electricity does a solar panel produce in Kortenberg?
In Kortenberg, a 1 kWp south-facing system tilted at 39° produces about 1,076 kWh a year.
Which municipalities border Kortenberg?
The nearest to Kortenberg are Steenokkerzeel (4.3 km), Zaventem (4.7 km), Wezembeek-Oppem (6.0 km), Kraainem (6.5 km), Kampenhout (6.5 km).
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