Municipality · Province of Hainaut · Wallonia
Silly
Dutch Opzullik
About Silly
Silly is a municipality in the province of Hainaut in Wallonia, Belgium. On 1 January 2026 it had 8,431 inhabitants on an area of 68.6 km², a population density of 123 inhabitants per km². That is lower than the average of 359 per km² in Hainaut and lower than the Belgian average of 387 per km².
By population, Silly ranks 399th of Belgium’s 565 municipalities and 47th of the 69 municipalities in Hainaut. By area it ranks 154th in Belgium.
The official language is French.
Population of Silly since 2016
Between 1 January 2016 and 1 January 2026 the population of Silly grew by 78 inhabitants (+0.9%), from 8,353 to 8,431. In the last year it changed by +9. The highest figure in this period was in 2024.
For population growth since 2016, Silly ranks 479th of 565. Over the same period the province of Hainaut changed by +2.3% and Belgium by +5.3%.
Neighbouring municipalities
Silly borders 9 municipalities:
Postcodes in Silly
| Postcode | Places |
|---|---|
| 7830 |
Distances from Silly
| To | km | miles |
|---|---|---|
| Mons | 22 | 14 |
| Brussels | 38 | 24 |
| Charleroi | 42 | 26 |
| Ghent | 50 | 31 |
| Kortrijk | 52 | 32 |
| Mechelen | 55 | 34 |
| Leuven | 59 | 36 |
| Namur | 68 | 42 |
| Antwerp | 74 | 46 |
| Bruges | 85 | 53 |
| Ostend | 96 | 59 |
| Hasselt | 101 | 63 |
| Liège | 115 | 71 |
| Arlon | 170 | 105 |
Straight line between the centres of the municipalities. By road it is usually 20–40% further. Calculate another distance →
Nearby municipalities
More about Silly: Wikipedia.