Switzerland · Canton SO

Bolken

4556

SO CANTON4556

Residents

593

Area

2.1 km²

Elevation

496 m a.s.l.

Tax multiplier

145%

Postal codes

1

Recent federal votes

BFS · sd-t-17-02

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)● Switzerland: accepted · turnout 69.5%57.0% yes

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»● Switzerland: rejected · turnout 69.5%63.4% yes

08.03.2026Bundesgesetz über die Individualbesteuerung● Switzerland: accepted · turnout 58.4%48.6% yes

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»● Switzerland: rejected · turnout 58.4%18.9% yes

Source: BFS · retrieved 20.07.2026

Politics

National Council election 2023

SVP40.1% · strongest party

SVP40.1%

SP16.8%

Mitte15.0%

FDP10.8%

GLP8.2%

Source: BFS · retrieved 20.07.2026

Taxes 2026

ESTV

Municipal tax multiplier145%

Cantonal tax multiplier104%

145%CH range 25%525%

Tax rank 104 of 104 in canton Solothurn

Source: ESTV · retrieved 20.07.2026

Climate

Koppigen · 9.3 km

Annual mean temperature 202510.2 °C

Precipitation 2025894 mm

10.2 °CCH range -5.5°14°

Source: MeteoSwiss · retrieved 24.07.2026

Municipality

Wikidata · CC0

Websitebolken.ch ↗

Source: Wikidata · retrieved 27.07.2026

Postal codes (1)

swisstopo

Localities

swisstopo · 1

Nearby municipalities

swisstopo

Wangen an der Aare

Frequently asked questions

What is the postal code of Bolken?: The postal code of Bolken is 4556.
What is the tax rate in Bolken?: The municipal tax multiplier of Bolken is 145% (2026); canton SO levies 104%.
How many residents does Bolken have?: Bolken has 593 residents.
How many foreign residents live in Bolken?: Bolken has 42 foreign residents, a share of 7.28% (2024).
Which party is strongest in Bolken?: In the 2023 National Council election, SVP was the strongest party in Bolken with 40.116% of the vote.

Map

OpenStreetMap