Wildhaus is a village and municipality near St. Gallen in the canton of St. Gallen in Switzerland. About 1,200 people live there. Huldrych Zwingli was born there in 1484. With 9658, Wildhaus has the highest zip code in Switzerland. On 1 January 2010, the former municipalities of Wildhaus and Alt St. Johann merged into the new municipality of Wildhaus-Alt St. Johann.