Municipality · Province of Antwerp · Flanders
Olen
About Olen
Olen is a municipality in the province of Antwerp in Flanders, Belgium. On 1 January 2026 it had 12,945 inhabitants on an area of 23.1 km², a population density of 559 inhabitants per km². That is lower than the average of 677 per km² in Antwerp and higher than the Belgian average of 387 per km².
By population, Olen ranks 288th of Belgium’s 565 municipalities and 49th of the 67 municipalities in Antwerp. By area it ranks 459th in Belgium.
The official language is Dutch.
Population of Olen since 2016
Between 1 January 2016 and 1 January 2026 the population of Olen grew by 703 inhabitants (+5.7%), from 12,242 to 12,945. In the last year it changed by +30.
For population growth since 2016, Olen ranks 224th of 565. Over the same period the province of Antwerp changed by +7.0% and Belgium by +5.3%.
Neighbouring municipalities
Olen borders 4 municipalities:
Postcodes in Olen
| Postcode | Places |
|---|---|
| 2250 | Olen |
Distances from Olen
| To | km | miles |
|---|---|---|
| Leuven | 34 | 21 |
| Mechelen | 34 | 21 |
| Antwerp | 37 | 23 |
| Hasselt | 42 | 26 |
| Brussels | 48 | 30 |
| Liège | 77 | 48 |
| Namur | 78 | 49 |
| Ghent | 82 | 51 |
| Charleroi | 88 | 55 |
| Mons | 102 | 63 |
| Bruges | 117 | 73 |
| Kortrijk | 120 | 75 |
| Ostend | 137 | 85 |
| Arlon | 178 | 110 |
Straight line between the centres of the municipalities. By road it is usually 20–40% further. Calculate another distance →
Nearby municipalities
More about Olen: Wikipedia.