Municipality · Province of Walloon Brabant · Wallonia
Lasne
About Lasne
Lasne is a municipality in the province of Walloon Brabant in Wallonia, Belgium. On 1 January 2026 it had 14,151 inhabitants on an area of 47.6 km², a population density of 297 inhabitants per km². That is lower than the average of 380 per km² in Walloon Brabant and lower than the Belgian average of 387 per km².
By population, Lasne ranks 261st of Belgium’s 565 municipalities and 10th of the 27 municipalities in Walloon Brabant. By area it ranks 244th in Belgium.
The official language is French.
Population of Lasne since 2016
Between 1 January 2016 and 1 January 2026 the population of Lasne grew by 18 inhabitants (+0.1%), from 14,133 to 14,151. In the last year it changed by −24. The highest figure in this period was in 2023.
For population growth since 2016, Lasne ranks 508th of 565. Over the same period the province of Walloon Brabant changed by +5.1% and Belgium by +5.3%.
Neighbouring municipalities
Lasne borders 6 municipalities:
Postcodes in Lasne
| Postcode | Places |
|---|---|
| 1380 |
Distances from Lasne
| To | km | miles |
|---|---|---|
| Brussels | 22 | 14 |
| Leuven | 28 | 17 |
| Charleroi | 29 | 18 |
| Namur | 38 | 24 |
| Mechelen | 39 | 24 |
| Mons | 43 | 27 |
| Antwerp | 64 | 40 |
| Hasselt | 66 | 41 |
| Ghent | 68 | 42 |
| Liège | 80 | 50 |
| Kortrijk | 85 | 53 |
| Bruges | 108 | 67 |
| Ostend | 123 | 76 |
| Arlon | 147 | 91 |
Straight line between the centres of the municipalities. By road it is usually 20–40% further. Calculate another distance →
Nearby municipalities
More about Lasne: Wikipedia.