As of the census of 2000, there were 945 people, 343 households, and 282 families residing in the township. The population density was 20.0 people per square mile. There were 469 housing units at an average density of 9.9/sq mi. The racial makeup of the township was 99.05% White, 0.11% African American, 0.11% Native American, 0.11% Pacific Islander, and 0.63% from two or more races. Hispanic or Latino of any race were 0.11% of the population. There were 343 households out of which 30.3% had children under the age of 18 living with them, 72.9% were married couples living together, 4.1% had a female householder with no husband present, and 17.5% were non-families. 14.3% of all households were made up of individuals and 5.8% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.00. In the township the population was spread out with 24.7% under the age of 18, 7.1% from 18 to 24, 28.7% from 25 to 44, 24.6% from 45 to 64, and 15.0% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 108.1 males. For every 100 females age 18 and over, there were 108.8 males. The median income for a household in the township was $36,094, and the median income for a family was $37,330. Males had a median income of $28,750 versus $21,691 for females. The per capita income for the township was $16,309. About 2.8% of families and 5.9% of the population were below the poverty line, including 8.1% of those under age 18 and 1.4% of those age 65 or over.
Communities and locations
Dogtown - A village on the southeastern border of Union Township. It is located on Pennsylvania Route 14.
Lycoming Creek - A creek that forms the southeastern border of the township with Lycoming County.
Newelltown - A village on PennsylvaniaRoute 14 in the southern part of the township, about a mile northeast of Dogtown.
Ogdensburg - A village on Pennsylvania Route 414 in the western part of the township.
Penbryn - A village on Pennsylvania Route 14 in the eastern part of the township. It is located near the triple border of Tioga, Bradford, and Lycoming Counties.
Roaring Branch - A village on Pennsylvania Route 14 in the southern part of the township, about two miles southwest of Dogtown.
South Union - A village in southwestern Union Township.
Spencertown - A village in the eastern part of the township.
Union Center - A village on Pennsylvania Route 414 in the central part of the township.
Politics and government
The Township is governed by three, locally elected Township Supervisors. Meetings are held the First Monday of each month with rotating times: January – April 1:00 pm; November and December 1 pm; May–October 8pm. Meetings are held at the Township building 42 Boyce Road, Roaring Branch. ;County level: Three, elected at large, Tioga County Commissioners. ;State level:
Residents of Union Township may attend the local, public schools operated by Canton Area School District which provides full day kindergarten through 12th grade. The District's enrollment declined to 990 students kindergarten through 12th grade. in 2013. Canton Area School District ranked 416th out of 500 public schools for academic achievement of its pupils in 2013. Union Township High School students and adults can attend the publicly funded Northern Tier Career Center for vocational training. Union 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 Canton Area School District were: Elementary School - $8,868.09, High School - $9,442.14. BLaST Intermediate Unit #17 provides a wide variety of services to children living in its region which includes Union 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 Green Free Library which is located in Canton, Bradford County and to Blossburg Memorial Library located in Blossburg. Residents also have access to the statewide PA Power Library which is an online library funded with tax dollars from the state's education budget.