Schmerikon is located at the head of Lake Zurich, on the section of the lake known as the Obersee and where the Linth river enters the lake.
Part of the municipality is a natural reserve, particularly along the lake shore.

Schmerikon has an area, as of 2006, of 4 km² (1.5 sq mi).
 Of this area, 38.9% is used for agricultural purposes, while 23% is forested.
 Of the rest of the land, 27% is settled (buildings or roads) and the remainder (11.1%) is non-productive (rivers or lakes).
Schmerikon is located at the head of Lake Zurich, on the section of the lake known as the Obersee and where the Linth river enters the lake. Part of the municipality is a natural reserve, particularly along the lake shore.
Schmerikon has an area, as of 2006, of 4 km² (1.5 sq mi).  Of this area, 38.9% is used for agricultural purposes, while 23% is forested.  Of the rest of the land, 27% is settled (buildings or roads) and the remainder (11.1%) is non-productive (rivers or lakes).
Schmerikon