Gossau is a locality located 145.84 km west-southwest from Bern in St. Gallen Canton, Switzerland. The population of Gossau is 18,172 people. Amriswil, Flawil, Herisau are located close to Gossau. You can find Gossau on any map using the following decimal coordinates: 47.4164 (latitude), 9.25 (longitude).