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Population of Seneffe

Reference date: 2026-01-01

11,568

residents

The official population of Seneffe was 11,568 residents on 1 January 2026, ranking 321st among Belgium's municipalities.

A documented local view of Seneffe
Documented local viewJean-Pol GRANDMONT · CC BY 2.5 · Adapted for Belgium in Maps; changes were made.
Population density
181.4residents/km²
Rank in Belgium
321stout of 565 municipalities
Population change
-63
Reference date
2026-01-01

Official time series

Official time series: Seneffe2019–2026: 11,433–11,568.11,67111,57011,46811,36711,433201911,480202011,407202111,465202211,520202311,624202411,631202511,5682026
2019-01-01 – 2026-01-01

Source: official Statbel data · Statbel

View the exact data table
Official time series
202611,568181.4
202511,631182.4
202411,624182.3
202311,520180.7
202211,465179.8
202111,407178.9
202011,480180.0
201911,433179.2

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: 19.6%18–24: 7.6%25–44: 24.9%45–64: 27.1%65 and older: 20.9%
Reference date: 2026-01-01
View the exact data table
Registered residents by age group
Under 182,26819.6%
18–248797.6%
25–442,87524.9%
45–643,12927.1%
65 and older2,41720.9%

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