(1923) Hundwil has an area, , of . Of this area, 58.5% is used for agricultural purposes, while 31.2% is forested. Of the rest of the land, 3.2% is settled (buildings or roads) and the remainder (7.1%) is non-productive (rivers, glaciers or mountains). It consists of the village of Hundwil, a number of
hamlets, numerous individual farm houses and alpine herding camps. Until 1749, the municipality of
Stein was part of Hundwil. The
Hundwiler Höhi is a recreational destination at . The most well-known and highest mountain in the area is
Säntis (), which is shared with neighbouring municipalities. The
Schwägalp valley station also belongs to the extended municipality. ==Demographics==