[2] According to the 2021 census gazetteer files, Bishop Township has a total area of 34.94 square miles (90.49 km2), all land.

As of the 2020 census[2] there were 1,702 people, 647 households, and 448 families residing in the township.

There were 629 housing units at an average density of 18.00 per square mile (6.95/km2).

The racial makeup of the township was 97.00% White, 0.24% African American, 0.06% Native American, 0.41% Asian, 0.00% Pacific Islander, 0.35% from other races, and 1.94% from two or more races.

28.30% of all households were made up of individuals, and 5.10% had someone living alone who was 65 years of age or older.