Municipality · NIS 25119 · closed 24/04/2026
Lasne
611provisional
-0,8 % in 2025 compared with 2024 (616)
2025: first publication (closed 24/04/2026), provisional figures. Late reports are added in later bulletins, which revise the figures upwards. The 2025/2024 change may therefore overstate the fall. Learn more
43,1 offences per 1,000 inhab. in 2025 (pop. 14 175 on 1/1/2025)
Source: Brabant_wallon_Lasne_fr.pdf · 115 pages
PNG image to share yourself (key figures, mayor, sources); it is not published on the site. The text in the image is in French.
Local executive
Mayor: Laurence ROTTHIER
List: MR · Party / affiliation: MR
In office on 14/01/2026 · source (official source)
Majority (lists on the executive): MR
In office on 14/01/2026 · source (official source)
Next elections: municipal and provincial elections: 13/10/2030 · regional, federal and European elections: 2029.
Profile
Official sources (Statbel), edition shown on each line.
- Population on 1 January 2026
- 14 151
Statbel, 1/1/2026
- Foreign nationals (non-Belgian nationality)
- 9,6 %1 359 out of 14 151
2010 : 12,5 % · 2026 : 9,6 %The vertical axis does not start at 0. Annual series
1 January Foreign nationals Share 2010 1 741 12,5 % 2011 1 725 12,3 % 2012 1 749 12,4 % 2013 1 754 12,4 % 2014 1 743 12,3 % 2015 1 697 12,0 % 2016 1 667 11,8 % 2017 1 637 11,5 % 2018 1 649 11,6 % 2019 1 578 11,1 % 2020 1 542 10,8 % 2021 1 518 10,6 % 2022 1 484 10,4 % 2023 1 530 10,7 % 2024 1 454 10,2 % 2025 1 402 9,9 % 2026 1 359 9,6 % Statbel, 1/1/2026, series 2010-2026
- Non-Belgians by group of nationality of origin
- Neighbouring countries*4,0 %(559)
- EU27 excluding neighbouring countries3,9 %(550)
- Non-EU271,8 %(250)
* Germany, France, Luxembourg, Netherlands, United Kingdom (Statbel grouping).
Statbel, 1/1/2026, share of the population
- Origin (indicator separate from nationality)
- Belgians of Belgian origin70,9 %(10 027)
- Belgians of foreign origin19,5 %(2 765)
- Non-Belgians9,6 %(1 359)
Statbel, 1/1/2026
- Age
- 0-17 years17,7 %(2 498)
- 18-64 years57,8 %(8 179)
- 65 and over24,5 %(3 474)
Statbel, 1/1/2026
- Area and density
47,6 km² · 298 inhab./km²
Statbel, 1/1/2025
- Median income per tax return
34 046 €total net taxable income, 7 977 returns
Statbel, income 2023
Definitions
- « Foreign national » = person with a non-Belgian nationality in the national register, on 1 January. Naturalised Belgians or Belgians of foreign origin are counted as Belgians.
- Origin (Statbel): based on current nationality, the person's first registered nationality and that of their parents. Official categories: Belgian of Belgian origin, Belgian of foreign origin, non-Belgian.
- Group of nationality of origin: Statbel grouping into neighbouring countries, EU27 excluding neighbouring countries, and non-EU27; this is not a strict EU / non-EU split (the United Kingdom is classed as a neighbouring country).
- Merged or renumbered municipalities: no reconstructed series before the date of the new code (same rule as for the reference population).
- These figures are not cross-referenced with any crime statistics.
Elections
- Valid votes: 8,921
- Registered: 10,682 · turnout 86.0 %
- Blank and void: 268 (2.9 % of ballots)
| List | Votes | % | Seats |
|---|---|---|---|
| MR | 6,683 | 74.9 % | 18 |
| ECOLO | 2,029 | 22.7 % | 5 |
| LNP | 209 | 2.3 % | 0 |
Source: SPW Intérieur (Walloon administration), official results (local elections of 13/10/2024). Local lists, under the filed name, not linked to any party. National view
Main categories
Click a category to open the annual series (2000, 2015-2025; 2025 provisional).
| Category | 2025prov. | Change 2025/2024 | 2000 |
|---|---|---|---|
| 611 | -0,8 % | 702 | |
| 210 | +32,1 % | 280 | |
| 86 | -5,5 % | - | |
| 81 | -19,0 % | 60 | |
| 41 | -8,9 % | 37 | |
| 34 | +88,9 % | 1 | |
| 34 | -15,0 % | 83 | |
| 33 | -10,8 % | 22 | |
| 21 | +110,0 % | 27 | |
| 17 | +21,4 % | 7 | |
| 14 | +16,7 % | 1 | |
| 11 | -31,3 % | 15 | |
| 9 | 0,0 % | 15 | |
| 9 | +50,0 % | - | |
| 7 | +16,7 % | 1 | |
| 5 | - | - | |
| 5 | -78,3 % | 48 | |
| 5 | +25,0 % | 16 | |
| 5 | -28,6 % | 5 | |
| 4 | -63,6 % | 26 | |
| 4 | -77,8 % | 6 | |
| 2 | -50,0 % | 3 | |
| 2 | - | 8 | |
| 2 | +100,0 % | 6 | |
| 1 | - | 1 | |
| 1 | - | 3 | |
| 1 | -50,0 % | - | |
| 1 | - | - | |
| - | - | 1 | |
| - | - | - | |
| - | - | - | |
| - | - | - | |
| - | - | - | |
| - | - | - | |
| - | - | 24 | |
| - | - | 7 | |
| - | - | - | |
| - | - | - |
Change 2025/2024: change in 2025 compared with 2024 (e.g. −10 % = 2025 is 10 % lower than 2024, not the reverse).
2025 provisional: first publication. Reports registered late are added in later bulletins, which revise the figures upwards, so the 2025/2024 fall may be overstated.
Source of figures: police crime statistics bulletin, Q4 2025 (closed 24/04/2026). Click a category to show the full available annual series.
Documented perimeters
1 documented perimeter for this municipality (separate regional instruments; no federal list).
- ZIP (Wallonie)1