According to the United States Census Bureau, the township has a total area of 36.0 square miles (93 km2), of which 35.4 square miles (92 km2) is land and 0.6 square miles (1.6 km2), or 1.75%, is water. The township completely surrounds the borough of Wellsville.
Demographics
As of the census[6] of 2000, there were 4,435 people, 1,702 households, and 1,329 families living in the township. The population density was 125.4 inhabitants per square mile (48.4/km2). There were 1,766 housing units at an average density of 49.9 per square mile (19.3/km2). The racial makeup of the township was 98.47% White, 0.23% African American, 0.11% Native American, 0.43% Asian, 0.07% from other races, and 0.70% from two or more races. Hispanic or Latino of any race were 1.04% of the population.
There were 1,702 households, out of which 32.6% had children under the age of 18 living with them, 67.9% were married couples living together, 6.3% had a female householder with no husband present, and 21.9% were non-families. 16.2% of all households were made up of individuals, and 5.1% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 2.89.
In the township the population was spread out, with 23.8% under the age of 18, 6.6% from 18 to 24, 30.9% from 25 to 44, 29.3% from 45 to 64, and 9.4% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 99.5 males. For every 100 females age 18 and over, there were 101.4 males.
Building in Rossville
The median income for a household in the township was $47,425, and the median income for a family was $51,941. Males had a median income of $37,940 versus $26,203 for females. The per capita income for the township was $21,368. About 1.5% of families and 2.6% of the population were below the poverty line, including 0.5% of those under age 18 and 5.2% of those age 65 or over.
