Switzerland · Canton SO
Bolken
4556SO CANTON4556
Residents
593
Area
2.1 km²
Tax multiplier
145%
Postal codes
1
Demographics
BFS · 2023Women
279 47.0%
Men
314 53.0%
Children & youth (0–19)
126 21.2%
Swiss citizens
535 92.7%
Foreign residents
42 7.3%
0–19 · 126 · 21.2%20–64 · 368 · 62.1%65+ · 99 · 16.7%
Foreign residents 7.3%0%61.6%
Source: BFS/OFS · retrieved 24.07.2026
Recent federal votes
BFS · sd-t-17-0214.06.2026Änderung 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 2023SVP40.1% · strongest party
SVP40.1%
SP16.8%
Mitte15.0%
FDP10.8%
GLP8.2%
Source: BFS · retrieved 20.07.2026
Taxes 2026
ESTVMunicipal tax multiplier145%
Cantonal tax multiplier104%
145%CH range 25%525%
Tax rank 104 of 104 in canton SolothurnSource: ESTV · retrieved 20.07.2026
Climate
Koppigen · 9.3 kmAnnual mean temperature 202510.2 °C
Precipitation 2025894 mm
10.2 °CCH range -5.5°14°
Source: MeteoSwiss · retrieved 24.07.2026
Municipality
Wikidata · CC0Websitebolken.ch ↗
Source: Wikidata · retrieved 20.07.2026
Postal codes (1)
swisstopoNearby municipalities
swisstopoFrequently 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 (2023).
- Which canton is Bolken in?
- Bolken is located in canton SO.