Municipality · Province of Flemish Brabant · Flanders
Lennik
About Lennik
Lennik is a municipality in the province of Flemish Brabant in Flanders, Belgium. On 1 January 2026 it had 9,400 inhabitants on an area of 31.2 km², a population density of 301 inhabitants per km². That is lower than the average of 571 per km² in Flemish Brabant and lower than the Belgian average of 387 per km².
By population, Lennik ranks 379th of Belgium’s 565 municipalities and 51st of the 63 municipalities in Flemish Brabant. By area it ranks 388th in Belgium.
The official language is Dutch.
Population of Lennik since 2016
Between 1 January 2016 and 1 January 2026 the population of Lennik grew by 367 inhabitants (+4.1%), from 9,033 to 9,400. In the last year it changed by −81. The highest figure in this period was in 2025.
For population growth since 2016, Lennik ranks 325th of 565. Over the same period the province of Flemish Brabant changed by +7.9% and Belgium by +5.3%.
Neighbouring municipalities
Lennik borders 6 municipalities:
Postcodes in Lennik
| Postcode | Places |
|---|---|
| 1750 | Gaasbeek, Sint-Kwintens-Lennik, Sint-Martens-Lennik |
Distances from Lennik
| To | km | miles |
|---|---|---|
| Brussels | 16 | 10 |
| Mechelen | 31 | 19 |
| Leuven | 39 | 24 |
| Ghent | 42 | 26 |
| Mons | 42 | 26 |
| Charleroi | 48 | 30 |
| Antwerp | 52 | 32 |
| Kortrijk | 63 | 39 |
| Namur | 64 | 39 |
| Bruges | 82 | 51 |
| Hasselt | 83 | 51 |
| Ostend | 97 | 60 |
| Liège | 102 | 64 |
| Arlon | 172 | 107 |
Straight line between the centres of the municipalities. By road it is usually 20–40% further. Calculate another distance →
Nearby municipalities
More about Lennik: Wikipedia.