St. James Township was organized in 1870, and named after its largest settlement, St.

As of the census[1] of 2000, there were 294 people, 111 households, and 88 families residing in the township.

The population density was 8.8 people per square mile (3.4/km2).

There were 111 households, out of which 34.2% had children under the age of 18 living with them, 73.9% were married couples living together, 2.7% had a female householder with no husband present, and 20.7% were non-families.

20.7% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older.