
Municipality · St. Gallen
Au is a municipality in the Wahlkreis (constituency) of Rheintal in the canton of St. Gallen in Switzerland.
Fibre
The rental vacancy rate is 2.98%, 117% above the cantonal average (1.37 %). The municipal tax multiplier (Steuerfuss) is 99%, 12% below the cantonal average (113 %) — tax-favourable. Median taxable income is CHF 57'000, 8% below the Swiss median (CHF 61'929). Au (SG) has 8'771 residents (2025).
Source: Swiss Federal Statistical Office (BFS).
3 apartments are currently listed to buy in Au (SG) on Homematch. The selection updates throughout the day as agencies publish new listings.
The median asking price in Au (SG) is around CHF 7'937 per m². For an 80 m² property that's roughly CHF 634'946 — actual prices vary widely by neighbourhood, age and condition.
Au (SG) is located in the canton of St. Gallen.
Au (SG) has approximately 8'771 residents.
The municipal tax multiplier (Steuerfuss) in Au (SG) is 99% of the cantonal base rate. Note: this is a multiplier of the cantonal income tax, not an effective tax rate.
CHF 1'090'000
4.5 rooms · 132 m²
Nöllenstrasse 2, 9443 Widnau
1.8 kmCHF 1'550'000
4.5 rooms · 202 m²
Brändlihangstrasse 10, 9442 Berneck
2.2 kmCHF 785'000
4.5 rooms · 124 m²
Ringstrasse 34, 9443 Widnau
Wislistrasse 2c, 9442 Berneck
CHF 1'195'000
4.5 rooms · 120 m²
9435 Heerbrugg (Au (SG))
CHF 970'000
4.5 rooms · 113 m²
Rheinstrasse 6a, 9443 Widnau