
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 %) — a comparatively relaxed market. 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).
18 apartments & houses are currently listed to rent in Au (SG) on Homematch. The selection updates throughout the day as agencies publish new listings.
The median asking rent in Au (SG) is around CHF 19 per m² per month. For an 80 m² property that works out to roughly CHF 1'517 per month — actual prices vary by neighbourhood, condition and amenities.
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.
2.0 kmCHF 1'530 /month
3.5 rooms
Ländernachstrasse 18, 9443 Widnau
1.8 kmCHF 2'140 /month
3.5 rooms · 102 m²
Brändlihangstrasse 10, 9442 Berneck
CHF 1'490 /month
3.5 rooms · 70 m²
Im Hinterguet 2, 9430 St. Margrethen SG
CHF 2'080 /month
3.5 rooms · 87 m²
Kirchstr. 1a, 9435 Heerbrugg