Switzerland · Canton SO
Grenchen
2540SO CANTON2540
Residents
18'295
Area
26 km²
Tax multiplier
114.9%
Postal codes
1
Demographics
BFS · 2023Women
9'119 49.8%
Men
9'176 50.2%
Children & youth (0–19)
3'317 18.1%
Swiss citizens
11'120 59.8%
Foreign residents
7'482 40.2%
0–19 · 3'317 · 18.1%20–64 · 10'966 · 59.9%65+ · 4'012 · 21.9%
Foreign residents 40.2%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 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 20.07.2026
Postal codes (1)
swisstopoNearby 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 (2023).
- Which canton is Grenchen in?
- Grenchen is located in canton SO.