Minneola is a name derived from the Dakota language meaning "much water".

[3] According to the United States Census Bureau, the township has a total area of 33.9 square miles (87.7 km2), of which 33.9 square miles (87.7 km2) is land and 0.03% is water.

As of the census[1] of 2000, there were 657 people, 234 households, and 190 families residing in the township.

There were 234 households, out of which 38.9% had children under the age of 18 living with them, 75.2% were married couples living together, 3.8% had a female householder with no husband present, and 18.8% were non-families.

15.0% of all households were made up of individuals, and 5.6% had someone living alone who was 65 years of age or older.