Switzerland · Canton SG

Au

9434–9435

SG CANTON9434 9435

Residents

8'481

Area

4.7 km²

Elevation

405 m a.s.l.

Tax multiplier

99%

Postal codes

2

Recent federal votes

BFS · sd-t-17-02

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)● Switzerland: accepted · turnout 53.6%61.6% yes

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»● Switzerland: rejected · turnout 54.7%57.5% yes

08.03.2026Bundesgesetz über die Individualbesteuerung● Switzerland: accepted · turnout 48.4%41.3% yes

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»● Switzerland: rejected · turnout 48.3%17.2% yes

Source: BFS · retrieved 20.07.2026

Politics

National Council election 2023

SVP38.8% · strongest party

SVP38.8%

Mitte18.1%

FDP14.4%

SP9.9%

GRÜNE6.2%

Source: BFS · retrieved 20.07.2026

Taxes 2026

ESTV

Municipal tax multiplier99%

Cantonal tax multiplier105%

99%CH range 25%525%

Tax rank 14 of 75 in canton St. Gallen

Source: ESTV · retrieved 20.07.2026

Climate

Altenrhein · 5.3 km

Annual mean temperature 202510.8 °C

Precipitation 20251'033 mm

10.8 °CCH range -5.5°14°

Source: MeteoSwiss · retrieved 24.07.2026

Municipality

Wikidata · CC0

Websiteau.sg.ch ↗

Source: Wikidata · retrieved 27.07.2026

Postal codes (2)

swisstopo

Localities

swisstopo · 2

Au SG9434 Heerbrugg9435

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Au?: Au has 2 postal codes: 9434, 9435.
What is the tax rate in Au?: The municipal tax multiplier of Au is 99% (2026); canton SG levies 105%.
How many residents does Au have?: Au has 8'481 residents.
How many foreign residents live in Au?: Au has 3'304 foreign residents, a share of 38.29% (2024).
Which party is strongest in Au?: In the 2023 National Council election, SVP was the strongest party in Au with 38.769% of the vote.

Map

OpenStreetMap