Middleville Township was organized in 1858, and named after a place in Virginia.

As of the census[1] of 2000, there were 925 people, 312 households, and 258 families residing in the township.

There were 327 housing units at an average density of 9.7 per square mile (3.7/km2).

There were 312 households, out of which 37.8% had children under the age of 18 living with them, 73.7% were married couples living together, 3.8% had a female householder with no husband present, and 17.3% were non-families.

13.8% of all households were made up of individuals, and 7.1% had someone living alone who was 65 years of age or older.