According to the United States Census Bureau, the CDP has a total area of 3.7 square miles (9.6 km2), all of it land.
As of the census of 2000, there were 2,604 people, 917 households, and 751 families residing in the CDP. The population density was 709.4 people per square mile (274.0/km²). There were 962 housing units at an average density of 262.1/sq mi (101.2/km²). The racial makeup of the CDP was 97.58% White, 0.69% African American, 0.08% Native American, 0.69% Asian, 0.27% from other races, and 0.69% from two or more races. Hispanic or Latino of any race were 1.96% of the population.
There were 917 households out of which 45.1% had children under the age of 18 living with them, 70.3% were married couples living together, 8.2% had a female householder with no husband present, and 18.1% were non-families. 13.7% of all households were made up of individuals and 3.5% had someone living alone who was 65 years of age or older. The average household size was 2.83 and the average family size was 3.13.
In the CDP the population was spread out with 29.3% under the age of 18, 8.1% from 18 to 24, 37.7% from 25 to 44, 19.2% from 45 to 64, and 5.6% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 99.4 males. For every 100 females age 18 and over, there were 96.0 males.
The median income for a household in the CDP was $50,122, and the median income for a family was $55,216. Males had a median income of $36,761 versus $25,510 for females. The per capita income for the CDP was $18,181. None of the families and 1.0% of the population were living below the poverty line, including no under eighteens and 2.8% of those over 64. The school district in which it resides is Donegal School District. Donegal School District currently houses four schools. Grades K-2 attend Donegal Primary School. Grades 3-6 attend Donegal Intermediate School. Donegal Junior High School holds grades 7 and 8 while Donegal High School holds grades 9-12. Prior to renovations, Donegal School District had several other schools including the historic Maytown Elementary School. Maytown Elementary School was the oldest operational elementary school in Pennsylvania before being closed in 2012.
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