Switzerland · Canton SO
Grenchen
2540SO CANTON2540
Residents
18'295
Area
26 km²
Elevation
451 m a.s.l.
Tax multiplier
114.9%
Postal codes
1
Recent federal votes
BFS · sd-t-17-0214.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)● Switzerland: accepted · turnout 45.8%57.1% yes
14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»● Switzerland: rejected · turnout 46.4%56.4% yes
08.03.2026Bundesgesetz über die Individualbesteuerung● Switzerland: accepted · turnout 41.8%55.2% yes
08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»● Switzerland: rejected · turnout 41.5%22.1% yes
Source: BFS · retrieved 20.07.2026
Politics
National Council election 2023SVP38.5% · strongest party
SVP38.5%
SP20.7%
FDP14.4%
Mitte12.7%
GRÜNE5.6%
Source: BFS · retrieved 20.07.2026
Taxes 2026
ESTVMunicipal tax multiplier114.9%
Cantonal tax multiplier104%
114.9%CH range 25%525%
Tax rank 32 of 104 in canton SolothurnSource: ESTV · retrieved 20.07.2026
Climate
Grenchen · 2.3 kmAnnual mean temperature 202510.5 °C
Precipitation 20251'101 mm
10.5 °CCH range -5.5°14°
Source: MeteoSwiss · retrieved 24.07.2026
Municipality
Wikidata · CC0Websitegrenchen.ch ↗
Source: Wikidata · retrieved 27.07.2026
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopoFrequently asked questions
- What is the postal code of Grenchen?
- The postal code of Grenchen is 2540.
- What is the tax rate in Grenchen?
- The municipal tax multiplier of Grenchen is 114.9% (2026); canton SO levies 104%.
- How many residents does Grenchen have?
- Grenchen has 18'295 residents.
- How many foreign residents live in Grenchen?
- Grenchen has 7'482 foreign residents, a share of 40.22% (2024).
- Which party is strongest in Grenchen?
- In the 2023 National Council election, SVP was the strongest party in Grenchen with 38.496% of the vote.