[3] The township is named for Eagle Creek, which flows through it.

Eagle Creek is in turned for the Bald Eagle[4] According to the United States Census Bureau, the township has a total area of 35.1 square miles (91 km2), all land.

As of the census[1] of 2000, there were 570 people, 196 households, and 145 families residing in the township.

There were 196 households, out of which 41.3% had children under the age of 18 living with them, 67.9% were married couples living together, 2.6% had a female householder with no husband present, and 26.0% were non-families.

22.4% of all households were made up of individuals, and 9.2% had someone living alone who was 65 years of age or older.