As of the census of 2000, there were 659 people, 242 households, and 186 families residing in the township. The population density was 22.4 people per square mile. There were 283 housing units at an average density of 9.6/sq mi. The racial makeup of the township was 98.94% White, 0.61% African American, and 0.46% from two or more races. Hispanic or Latino of any race were 0.61% of the population. There were 242 households, out of which 34.3% had children under the age of 18 living with them, 62.4% were married couples living together, 8.3% had a female householder with no husband present, and 23.1% were non-families. 19.4% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.06. In the township the population was spread out, with 28.4% under the age of 18, 5.6% from 18 to 24, 26.6% from 25 to 44, 24.6% from 45 to 64, and 14.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 98.5 males. For every 100 females age 18 and over, there were 92.7 males. The median income for a household in the township was $34,688, and the median income for a family was $38,846. Males had a median income of $28,958 versus $22,188 for females. The per capita income for the township was $14,354. About 10.4% of families and 15.0% of the population were below the poverty line, including 27.0% of those under age 18 and 12.7% of those age 65 or over.
Communities and locations
Academy Corners - A village in the central part of the township about a mile east of Knoxville, located on Pennsylvania Route 49.
Residents of Deerfield Township may attend the local, public schools operated by Northern Tioga School District which provides full day kindergarten through 12th grade. In 2013, the District's enrollment declined to 2,085 students kindergarten through 12th grade. Each elementary school provides a taxpayer funded preschool classroom. In 2013, Northern Tioga School District ranked 389th out of 498 public schools for academic achievement of its pupils, by the Pittsburgh Business Times. Deerfield Township residents may also apply to attend any of the Commonwealth's 14 public cyber charter schools at no additional cost to the parents. The resident’s public school district is required to pay the charter school and cyber charter school tuition for residents who attend these public schools. By Commonwealth law, if the District provides transportation for its own students, then the District must provide transportation to any school that lies within 10 miles of its borders. Residents may also seek admission for their school aged child to any other public school district. When accepted for admission, the student's parents are responsible for paying an annual tuition fee set by the Pennsylvania Department of Education. In 2012, the tuition fees for Northern Tioga School District were: Elementary School - $8,463.08, High School - $9,853.49. BLaST Intermediate Unit #17 provides a wide variety of services to children living in its region which includes Deerfield Township. Early screening, special educations services, speech and hearing therapy and many other services like driver education are available. Services for children during the preschool years are provided without cost to their families when the child is determined to meet eligibility requirements. Community members have access to the Westfield Public Library which is located on Maple Street, in Westfield; the Elkland Area Community Library located on East Parkway Avenue, in Elkland, the Green Free Library located on 134 Main Street, in Wellsboro and to the statewide PA Power Library which is an online library funded with tax dollars from the state's education budget.
Government
Deerfield Township is governed by three, locally elected Township Supervisors. The Superviors meet the Second Wednesday night of the month at the Knoxville Community Building. ;County level: Three, elected at large, County Commissioners. In 2014 the Commissioners are : Roger C. Bunn, Mark L. Hamilton and Erick J. Coolidge. ;State level:
