[1] According to the 2021 census gazetteer files, St. Francis Township (T8N R7E) has a total area of 32.38 square miles (83.9 km2), all land.

[2] As of the 2020 census[1] there were 1,194 people, 448 households, and 376 families residing in the township.

There were 479 housing units at an average density of 14.80 per square mile (5.71/km2).

The racial makeup of the township was 95.56% White, 0.08% African American, 0.00% Native American, 0.92% Asian, 0.00% Pacific Islander, 0.25% from other races, and 3.18% from two or more races.

11.40% of all households were made up of individuals, and 3.30% had someone living alone who was 65 years of age or older.