Population
18'943↑1.7%

Municipality · St. Gallen
Gossau is a municipality in the Wahlkreis (constituency) of St. Gallen in the canton of St. Gallen in Switzerland.
The rental vacancy rate is 1.24%, 10% below the cantonal average (1.37 %). The municipal tax multiplier (Steuerfuss) is 116%, 3% above the cantonal average (113 %). Median taxable income is CHF 56'500, 9% below the Swiss median (CHF 61'929). Gossau (SG) has 18'943 residents (2025).
Source: Swiss Federal Statistical Office (BFS).