Penbrook is a borough in Dauphin County, Pennsylvania, United States, founded in 1861 and incorporated July 10, 1894.

According to the U.S. Census Bureau, the borough has a total area of 0.45 square miles (1.16 km2), all of which is land.

[5] Penbrook Park is an 8.5-acre (3.4 ha) recreational area in the southeast corner of the borough and contains ball fields, a large wooden play structure, basketball courts, concession stand, and a picnic pavilion.

Little Valley Park with 1.5 acres (0.61 ha) was given to the community in 1960 by S. Merl Mosby, who reclaimed a Depression-era landfill with more than 2,000 loads of dirt from nearby Edgemont.

It contains a ball field, a play structure with a large purple dinosaur, baseball field and basketball courts and is located near East Harrisburg Cemetery and the St. Margaret Mary school.

Reservoir Park, with 85 acres (34 ha), is adjacent to the southwest border of the borough, with Levitt Performing Arts Pavilion and the National Civil War Museum.

[6][7] There are four voting precincts, one for each ward, though all four polling stations are located in the same room in the Community Building.

Caucus meetings are held on the third Monday of every month at 6:30 pm at the Borough Building.

Older students transferred to John Harris HS or Susquehanna Township High School.