Province · Wallonia
Walloon Brabant
Dutch Waals-Brabant · French Brabant wallon
About Walloon Brabant
Walloon Brabant is one of the five provinces of Wallonia, with 416,947 inhabitants on 1,097 km² on 1 January 2026, or 3.5% of Belgium’s population. Its capital is Wavre. The population density of 380 inhabitants per km² is close to the Belgian average of 387.
The largest municipality is Braine-l'Alleud with 40,815 inhabitants; the smallest by population is Hélécine with 3,926.
Population of Walloon Brabant since 2016
Between 1 January 2016 and 1 January 2026 the population of Walloon Brabant grew by 20,107 inhabitants (+5.1%), from 396,840 to 416,947. In the last year it changed by +1,566.
Belgium as a whole changed by +5.3% over the same period. The fastest-growing municipality in Walloon Brabant was Hélécine (+15.9%).
All municipalities in Walloon Brabant
| Municipality | Province | Population | Area km² | Per km² |
|---|---|---|---|---|
| Braine-l'Alleud | Walloon Brabant | 40,815 | 52.2 | 781 |
| Wavre | Walloon Brabant | 35,735 | 42.1 | 848 |
| Ottignies-Louvain-la-Neuve | Walloon Brabant | 31,823 | 33.4 | 953 |
| Waterloo | Walloon Brabant | 30,386 | 21.4 | 1,420 |
| Nivelles | Walloon Brabant | 29,830 | 60.9 | 490 |
| Tubize | Walloon Brabant | 29,043 | 32.8 | 885 |
| Rixensart | Walloon Brabant | 22,973 | 17.5 | 1,315 |
| Genappe | Walloon Brabant | 16,299 | 90.3 | 181 |
| Jodoigne | Walloon Brabant | 15,030 | 73.7 | 204 |
| Lasne | Walloon Brabant | 14,151 | 47.6 | 297 |
| Grez-Doiceau | Walloon Brabant | 14,049 | 55.6 | 253 |
| Chaumont-Gistoux | Walloon Brabant | 11,918 | 48.3 | 247 |
| Rebecq | Walloon Brabant | 11,230 | 39.2 | 286 |
| Court-Saint-Étienne | Walloon Brabant | 11,081 | 27.0 | 411 |
| Villers-la-Ville | Walloon Brabant | 11,054 | 47.9 | 231 |
| Braine-le-Château | Walloon Brabant | 10,610 | 22.8 | 466 |
| Perwez | Walloon Brabant | 9,810 | 51.2 | 192 |
| Orp-Jauche | Walloon Brabant | 9,176 | 50.8 | 181 |
| Mont-Saint-Guibert | Walloon Brabant | 8,503 | 18.8 | 453 |
| Chastre | Walloon Brabant | 7,817 | 31.6 | 248 |
| Walhain | Walloon Brabant | 7,566 | 38.1 | 199 |
| La Hulpe | Walloon Brabant | 7,539 | 15.5 | 487 |
| Beauvechain | Walloon Brabant | 7,248 | 38.7 | 187 |
| Ittre | Walloon Brabant | 6,918 | 35.0 | 197 |
| Ramillies | Walloon Brabant | 6,707 | 49.2 | 136 |
| Incourt | Walloon Brabant | 5,710 | 38.8 | 147 |
| Hélécine | Walloon Brabant | 3,926 | 17.0 | 231 |