What is the postal code of Allschwil?

The postal code of Allschwil is 4123.

What is the tax rate in Allschwil?

The municipal tax multiplier of Allschwil is 58% (2026); canton BL levies 100%.

How many residents does Allschwil have?

Allschwil has 22'110 residents (2023).

Which canton is Allschwil in?

Allschwil is located in canton BL.

Switzerland · Canton BL

Allschwil

4123

BL CANTON4123

Residents

22'110

Area

8.9 km²

Tax multiplier

58%

Postal codes

Demographics

BFS · 2023

Women

11'461 51.8%

Men

10'649 48.2%

Children & youth (0–19)

4'296 19.4%

Swiss citizens

15'320 69.2%

Foreign residents

6'835 30.9%

0–19 · 4'296 · 19.4%20–64 · 12'885 · 58.3%65+ · 4'929 · 22.3%

Foreign residents 30.9%0%61.6%

Source: BFS/OFS · retrieved 24.07.2026

Recent federal votes

BFS · sd-t-17-02

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)● Switzerland: accepted · turnout 55.5%47.0% yes

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»● Switzerland: rejected · turnout 56.8%38.7% yes

08.03.2026Bundesgesetz über die Individualbesteuerung● Switzerland: accepted · turnout 51.5%59.1% yes

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»● Switzerland: rejected · turnout 51.1%31.1% yes

Source: BFS · retrieved 20.07.2026

Politics

National Council election 2023

SP29.2% · strongest party

SP29.2%

SVP23.8%

FDP13.3%

Mitte12.5%

GRÜNE9.4%

Source: BFS · retrieved 20.07.2026

Taxes 2026

ESTV

Municipal tax multiplier58%

Cantonal tax multiplier100%

58%CH range 25%525%

Tax rank 29 of 86 in canton Basel-Landschaft

Source: ESTV · retrieved 20.07.2026

Climate

Basel / Binningen · 3 km

Annual mean temperature 202511.8 °C

Precipitation 2025930 mm

11.8 °CCH range -5.5°14°

Source: MeteoSwiss · retrieved 24.07.2026

Municipality

Wikidata · CC0

Head of governmentFranz Vogt

Websiteallschwil.ch ↗

Source: Wikidata · retrieved 20.07.2026

Postal codes (1)

swisstopo

4123

Allschwil

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Allschwil?: The postal code of Allschwil is 4123.
What is the tax rate in Allschwil?: The municipal tax multiplier of Allschwil is 58% (2026); canton BL levies 100%.
How many residents does Allschwil have?: Allschwil has 22'110 residents (2023).
Which canton is Allschwil in?: Allschwil is located in canton BL.

Map

OpenStreetMap