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Population of Braine-l’Alleud

Reference date: 2026-01-01

40,815

residents

The official population of Braine-l’Alleud was 40,815 residents on 1 January 2026, ranking 51st among Belgium's municipalities.

A documented local view of Braine-l’Alleud
Documented local viewJean-Pol GRANDMONT · CC BY 3.0 · Adapted for Belgium in Maps; changes were made.
Population density
780.1residents/km²
Rank in Belgium
51stout of 565 municipalities
Population change
+59
Reference date
2026-01-01

Official time series

Official time series: Braine-l’Alleud2017–2026: 39,759–40,815.41,00540,52640,04839,56939,759201739,837201840,008201940,170202040,093202140,346202240,469202340,461202440,756202540,8152026
2017-01-01 – 2026-01-01

Source: official Statbel data · Statbel

View the exact data table
Official time series
202640,815780.1
202540,756779.0
202440,461773.3
202340,469773.5
202240,346771.1
202140,093766.3
202040,170767.8
201940,008764.8
201839,837761.5
201739,759759.5
201639,785760.0
201539,756759.4
201439,535755.2
201339,250749.8
201238,882742.8
201138,544736.3
201038,303731.7
200937,948724.9

Population

Who lives here

A complete, non-overlapping view of the registered population by age, from the same reference-date record.
Age structureShare of registered residents in five non-overlapping age groups.Under 18: 18.5%18–24: 8.6%25–44: 23.3%45–64: 27.1%65 and older: 22.5%
Reference date: 2026-01-01
View the exact data table
Registered residents by age group
Under 187,54618.5%
18–243,5198.6%
25–449,50823.3%
45–6411,06527.1%
65 and older9,17722.5%

Key figures

Municipalities in the same province with a similar population

Use these population patterns in Horizon Mapper for catchment and location-opportunity analysis. Horizon Mapper