Benner Township was settled in 1793 with the establishment of an iron furnace. It is named for General Phillip Benner who built the furnace along Spring Creek near the settlement of Rock. Benner built a nail mill and slitting mill in the area as well. Buffalo were seen in the area as late as 1769. Other wild game that inhabited the area prior to settlement were bears, gray wolves and cougars. It is noted that these three animals were so abundant in the area that men dared not venture into the woods after dark. The Brockerhoff Mill was added to the National Register of Historic Places in 1979.
As of the census of 2010, there were 6,188 people, 1,612 households, and 1,095 families residing in the township. The population density was 217.1 people per square mile. There were 1,759 housing units at an average density of 61.7/sq mi. The racial makeup of the township was 78.8% White, 16.2% Black or African American, 0.1% Native American, 0.4% Asian, 0.1% Pacific Islander, 3.6% from other races, and 0.8% from two or more races. Hispanic or Latino of any race were 4.2% of the population. There were 1,612 households, out of which 28.2% had children under the age of 18 living with them, 56.5% were married couplesliving together, 4.0% had a male householder with no wife present, 7.4% had a female householder with no husband present, and 32.1% were non-families. 26.2% of all households were made up of individuals, and 8.3% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.88. In the township the population was spread out, with 13.3% under the age of 18, 8.9% from 18 to 24, 38.7% from 25 to 44, 29.2% from 45 to 64, and 9.9% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 218.8 males. For every 100 females age 18 and over, there were 245.4 males. The median income for a household in the township was $54,566, and the median income for a family was $67,687. The per capita income for the township was $24,092. About 2.6% of families and 5.4% of the population were below the poverty line, including 9.6% of those under age 18 and 11.0% of those age 65 or over.
Government and infrastructure
is located in Benner Township. It houses the state execution chamber.
