About Au (SG)
Au is a municipality in the Wahlkreis (constituency) of Rheintal in the canton of St. Gallen in Switzerland.
- Canton
- St. Gallen
- Area
- 4.7 km²
Population
8'628residents
Median taxable income
CHF 62'982
Vacancy
2.98%
Foreign residents
38.3%
Dwellings
4'195
Jobs (FTE)
4'807
Tax multiplier
93%
Land use across the commune
Every 100 × 100 m of Au (SG), coloured by how it's used. Drawn from the BFS Arealstatistik 2025 release — the most recent nationwide snapshot.
Source BFS Arealstatistik
Loading statistics …
Jobs & economy
4'807 full-time-equivalent jobs across 599 businesses — services make up 54% of employment, industry 45% (2018).
Source BFS STATENT
4'807FTE total
Primary1.0%
Secondary45.3%
Tertiary53.6%
Land use
55% built-up, 35% agricultural, 4% forest. Measured across 466 hectares (2018).
Source BFS Arealstatistik
Settlement58.4%
Agriculture37.2%
Forest4.4%
Water0.0%
Election Results
SVP led the 2023 National Council election with 38.8%, ahead of Mitte at 18.1%.
Source BFS
SVP38.8%+4.5 pp
Mitte18.1%
FDP14.4%±0 pp
SP9.9%−1.6 pp
Grüne6.2%−2.8 pp
GLP5.8%−2.0 pp
EDU1.1%+0.3 pp
Others
0.9%
2023 vs 2019
Primary / second-home mix
92.3% of dwellings are primary residences; 7.7% are second homes (2026).
Source BFS
Primary residences92.3%
Second homes7.7%
Climate data
Annual mean 8.7°C with 1'433 mm of rain. Warmest in July (17.5°C), coldest in January (0.2°C). Station: St. Gallen, 776 m.
Source MeteoSchweiz
8.7°C
Annual mean
Mean 8.7°C
Rain 1433 mm
Sun ≈135 days
St. Gallen · 776 m.a.s.l. · 1991–2020 normals
Warming trend
Mean annual temperature at St. Gallen has risen by +2.5°C between the first 30 observed years (1864–1893) and the most recent (1996–2025).
Source MeteoSchweiz NBCN
+2.5°C
mean 1996–2025 vs. 1864–1893
St. Gallen · 776 m.a.s.l. · 1864–2025
