Ravenna Township is a township in Dakota County, Minnesota, United States. The population was 2,336 at the 2010 census.Ravenna Township was organized in 1860, and named after Ravenna, Ohio.GeographyAccording to the United States Census Bureau, the township has a total area of, of which is land and, or 5.76%, is water.DemographicsAs of the census of 2000, there were 2,355 people, 734 households, and 667 families residing in the township. The population density was 114.3 people per square mile (44.1/km²). There were 741 housing units at an average density of 36.0/sq mi (13.9/km²). The racial makeup of the township was 97.07% White, 0.89% African American, 0.93% Native American, 0.30% Asian, 0.30% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 0.81% of the population.There were 734 households out of which 49.0% had children under the age of 18 living with them, 84.7% were married couples living together, 2.5% had a female householder with no husband present, and 9.1% were non-families. 6.5% of all households were made up of individuals and 1.0% had someone living alone who was 65 years of age or older. The average household size was 3.21 and the average family size was 3.33.