[3] Soo Township consists of two section in northeastern Chippewa County, connected by a stretch of the St. Marys River.

The northwestern section is part of the Upper Peninsula of Michigan and is bordered to the north by the city of Sault Ste.

It extends west into Izaak Walton Bay on the St. Marys River (upstream from Sault Ste.

Marie) and east as far as the Little Rapids Channel of the river (downstream from Sault Ste.

According to the US Census Bureau, the township has a total area of 67.9 square miles (175.9 km2), of which 50.1 square miles (129.8 km2) is land and 17.8 square miles (46.1 km2), or 26.20%, is water.