The municipality is the capital of the Sarganserland Wahlkreis. It is located at the foot of the Mt Gonzen. The eastern border of the municipality is the Rhine river and Liechtenstein. As it is located at the intersection of the Rhine and Seez valleys, Sargans has long been important in both a strategic and commercial sense. It consists of the village of Sargans and the hamlets of Vild, Ratell, Prod, Splee, Riet, Farb, Töbeli and Schwefelbad.