Tremelo: population and statistics
Tremelo has a population of 15,372 (2026) across 21.9 km², or 702 people per km². It ranks 237 of 565 municipalities by population. Its population is growing: +4.3% between 2016 and 2026.
- 15,372 residents
- 21.9 km²
- 702 people/km²
- 11 m
Key points
Among the 63 municipalities in Flemish Brabant, Tremelo ranks No. 30 by population.
Share of inhabitants under 20: 18.0% in Tremelo, compared with an average of 22.6% in Flemish Brabant and 21.8% nationally.
Administrative poverty risk: 4.1% in Tremelo, compared with an average of 6.8% in Flemish Brabant and 11.0% nationally.
Largest business sector: Professional, scientific and technical, with 20.8% of the area's businesses.
A 1 kWp solar panel tilted at 39° generates about 1,060 kWh a year here.
Did you know?
- “Share of inhabitants under 20”: lower than in 98% of municipalities.
- “Administrative poverty risk”: lower than in 97% of municipalities.
- “Buildings built before 1946”: lower than in 96% of municipalities.
- Its area is roughly equal to 3,066 football pitches.
- The nearest municipality is Rotselaar, 4.5 km away.
- The nearest more populous municipality is Aarschot (31,948 residents), 9.1 km away.
- A 4 kWp rooftop solar system here would generate about 4,240 kWh a year, roughly what an average household uses.
Tremelo in numbers
All indicators for Tremelo
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 | Tremelo | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants aged 65 and over (2026) | 26.3% | 20.8% | 21.7% | ranked 31 of 564 | |
| Share of inhabitants under 20 (2026) | 18.0% | 22.6% | 21.5% | ranked 548 of 564 |
Housing
| Indicator | Tremelo | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings built before 1946 (2024) | 9.6% | – | 34.6% | ranked 544 of 564 | |
| Buildings built after 2001 (2024) | 21.4% | – | 15.3% | ranked 51 of 564 | |
| Share of houses in the building stock (2024) | 86.2% | – | 79.9% | ranked 27 of 564 | |
| Number of dwellings (2024) | 7,048 | 542,504 | 5,783,434 | ranked 240 of 565 | |
| New dwellings authorised per year per 1,000 inhabitants (2021-2025) | 4.61 ‰ inh. | 4.02 ‰ inh. | 4.39 ‰ inh. | ranked 261 of 564 |
Energy
| Indicator | Tremelo | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Residential buildings with central heating or air conditioning (2024) | 85.9% | – | 76.7% | ranked 106 of 564 |
Economy
| Indicator | Tremelo | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| VAT-liable enterprises (2024) | 1,609 | 130,833 | 1,170,010 | ranked 231 of 565 | |
| VAT-liable enterprises per 1,000 inhabitants (2024) | 104.7 ‰ inh. | 108.1 ‰ inh. | 102.2 ‰ inh. | ranked 258 of 564 | |
| Net taxable income per inhabitant (2023) | 28,364 € | 26,927 € | 24,247 € | ranked 53 of 564 | |
| Median disposable income (administrative) (2023) | 32,952 € | – | 30,830 € | ranked 79 of 551 | |
| Median selling price of houses (2025) | 360,000 € | – | 302,500 € | ranked 147 of 554 |
Transport
| Indicator | Tremelo | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Cars per household (2025) | 1.39 | 1.20 | 1.25 | ranked 61 of 564 | |
| Households without a car (2025) | 12.9% | 21.3% | 17.6% | ranked 522 of 564 |
Society
| Indicator | Tremelo | Flemish Brabant | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants of foreign nationality (2026) | 3.6% | 11.9% | 6.4% | ranked 499 of 564 | |
| Administrative poverty risk (2023) | 4.1% | 6.8% | 7.0% | ranked 534 of 551 |
Population of Tremelo over time
Tremelo had 14,733 residents in 2016 and 15,372 in 2026.
| Year | Population |
|---|---|
| 2021 | 15,008 |
| 2022 | 15,190 |
| 2023 | 15,338 |
| 2024 | 15,417 |
| 2025 | 15,418 |
| 2026 | 15,372 |
Where is Tremelo?
Business sectors: Tremelo
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Professional, scientific and technical20.8% ×1.0
- Construction14.5% ×1.1
- Wholesale and retail trade14.2% ×0.9
- Other service activities8.8% ×1.3
- Information and communication8.3% ×1.5
- Administrative and support services6.5% ×1.0
- Health and social work5.3% ×1.2
- Arts, entertainment and recreation4.4% ×1.1
Sunshine and temperatures: Tremelo
Frequently asked questions
What is the population of Tremelo?
Tremelo has 15,372 residents (2026), ranking 237 of 565 municipalities.
How big is Tremelo?
Tremelo covers 21.9 km², with a density of 702 people per km².
Is the population of Tremelo growing?
Between 2016 and 2026, the population of Tremelo went from 14,733 to 15,372, a change of +4.3%.
Where is Tremelo?
Tremelo is in Flemish Brabant. It belongs to Leuven (arrondissement). Latitude 50.991, longitude 4.704.
Share of inhabitants under 20: what is the figure for Tremelo?
In Tremelo, “Share of inhabitants under 20” stands at 18.0% (2026), ranking 548 of 564 municipalities; the national median is 21.5%.
Administrative poverty risk: what is the figure for Tremelo?
In Tremelo, “Administrative poverty risk” stands at 4.1% (2023), ranking 534 of 551 municipalities; the national median is 7.0%.
How much electricity does a solar panel produce in Tremelo?
In Tremelo, a 1 kWp south-facing system tilted at 39° produces about 1,060 kWh a year.
Which municipalities border Tremelo?
The nearest to Tremelo are Rotselaar (4.5 km), Haacht (5.0 km), Keerbergen (5.3 km), Begijnendijk (6.4 km), Putte (8.8 km).
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