As of the census of 2000, there were 597 people, 235 households, and 175 families residing in the township. The population density was 17.8 people per square mile. There were 411 housing units at an average density of 12.3/sq mi. The racial makeup of the township was 99.33% White, 0.17% Native American, 0.17% Asian, and 0.34% from two or more races. There were 235 households, out of which 25.5% had children under the age of 18 living with them, 66.0% were married couples living together, 6.4% had a female householder with no husband present, and 25.5% were non-families. 22.1% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 2.94. In the township the population was spread out, with 23.5% under the age of 18, 6.9% from 18 to 24, 22.8% from 25 to 44, 32.0% from 45 to 64, and 14.9% who were 65 years of age or older. The median age was 44 years. For every 100 females, there were 100.3 males. For every 100 females age 18 and over, there were 90.4 males. The median income for a household in the township was $25,750, and the median income for a family was $28,889. Males had a median income of $26,250 versus $20,104 for females. The per capita income for the township was $12,280. About 21.2% of families and 27.3% of the population were below the poverty line, including 44.1% of those under age 18 and 20.2% of those age 65 or over.
Communities and locations
Azelta - A village in the eastern part of the township.
Beechwood Lake - A small lake in the central part of the township, between Sabinsville and Azelta.
Clymer - A village in the western part of the township, near the Potter County line.
Sabinsville - A village on Pennsylvania Route 349 in the northern part of the township.
Education
Residents of Clymer 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. In 2013, Northern Tioga School District ranked 389th out of 498 public schools for academic achievement of its pupils, by the Pittsburgh Business Times. Clymer 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 Clymer Township. Early screening, special educational services, speech, 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 Free Green Library in Wellsboro and to the statewide PA Power Library which is an online library funded with tax dollars from the state's education budget. Mansfield University of Pennsylvania is a state university located in Mansfield, Tioga County, Pennsylvania. Residents may take courses at a discounted tuition rate for state residents.
Government
The Clymer Township is governed by three locally elected Township Supervisors. ;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:
