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Population of Westerlo

Reference date: 2026-01-01

25,723

residents

The official population of Westerlo was 25,723 residents on 1 January 2026, ranking 120th among Belgium's municipalities.

A documented local view of Westerlo
Documented local viewMichielverbeek · CC BY-SA 3.0 · Adapted for Belgium in Maps; changes were made.
Population density
463.9residents/km²
Rank in Belgium
120thout of 565 municipalities
Population change
+32
Reference date
2026-01-01

Official time series

Official time series: Westerlo2017–2026: 24,688–25,723.25,90925,44024,97124,50224,688201724,884201825,051201925,119202025,288202125,308202225,466202325,625202425,691202525,7232026
2017-01-01 – 2026-01-01

Source: official Statbel data · Statbel

View the exact data table
Official time series
202625,723463.9
202525,691463.3
202425,625462.1
202325,466459.1
202225,308456.3
202125,288455.9
202025,119452.9
201925,051452.2
201824,884449.2
201724,688445.3
201624,705445.6
201524,594443.6
201424,494441.8
201324,497441.8
201224,379439.7
201124,198436.4
201023,896431.0
200923,669426.9

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: 16.9%18–24: 7.6%25–44: 22.1%45–64: 28.6%65 and older: 24.8%
Reference date: 2026-01-01
View the exact data table
Registered residents by age group
Under 184,35216.9%
18–241,9667.6%
25–445,68022.1%
45–647,35528.6%
65 and older6,37024.8%

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