Stein is a municipality in the canton of Appenzell Ausserrhoden in Switzerland. The municipality separated from Hundwil in 1749 and w…Stein is a municipality in the canton of Appenzell Ausserrhoden in Switzerland. The municipality separated from Hundwil in 1749 and was named after the Uf Stein section of the neighbouring river. Stein has an area, as of 2006, of 9.4 km². Of this area, 68.3% is used for agricultural purposes, while 22% is forested. Of the rest of the land, 8.3% is settled and the remainder is non-productive.