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Plum, Pennsylvania
Oakmont Country ClubNational Register of Historic Places
Oakmont Country Club
National Register of Historic Places
Location in Allegheny County and the U.S. state of Pennsylvania.
Location in Allegheny County and the U.S. state of Pennsylvania.
Plum, Pennsylvania is located in Pennsylvania
Plum, Pennsylvania
Plum, Pennsylvania
Location in Pennsylvania
Plum, Pennsylvania is located in the United States
Plum, Pennsylvania
Plum, Pennsylvania
Location in the United States
Country United States
State Pennsylvania
County Allegheny
Founded as Plum Township 1788
 • Total 28.96 sq mi (75.01 km2)
 • Land 28.58 sq mi (74.03 km2)
 • Water 0.38 sq mi (0.98 km2)  1.34%
 • Total 27,126
 • Estimate 
 • Density 947.66/sq mi (365.89/km2)
FIPS code 42-61536

Plum is a borough in Allegheny County in the U.S. state of Pennsylvania. A suburb of Pittsburgh, Pennsylvania, it is located northeast of the city of Pittsburgh, in what is commonly referred to as the East Hills suburbs. In 2018, Plum's population was 27,135.

Plum is often referred to as "Plum Boro" or more correctly "Plum Borough" by locals to distinguish it from its previous status as a township. It was founded as Plum Township in 1788 and was reorganized as a borough in 1956. The borough took its name from nearby Plum Creek.


Allegheny County was formed on September 24, 1788. Allegheny County was originally made up of seven townships, plus the then borough of Pittsburgh. Plum was one of those original seven townships. Originally extending as far south as Versailles (modern-day North Versailles Township), east to the county line, west to Penn Township, and north to the Allegheny River, Plum Township was founded on December 18, 1788. Plum has shrunk greatly over the years in area, but still remains among the larger municipalities in Allegheny County.


According to the United States Census Bureau, the borough has a total area of 29.0 square miles (75 km2), of which 28.6 square miles (74 km2) is land and 0.4 square miles (1.0 km2), or 1.34%, is water.


Surrounding communities


Historical population
Census Pop.
1960 10,241
1970 21,932 114.2%
1980 25,390 15.8%
1990 25,609 0.9%
2000 26,940 5.2%
2010 27,126 0.7%
2019 (est.) 27,087 −0.1%

At the 2010 census there were 27,126 people, 10,528 households, and 7,431 families living in the borough. The population density was 935.4 people per square mile. There were 10,528 housing units at an average density of 363.0 per square mile. The racial makeup of the borough was 93.9% White, 3.6% African American, 0.1% Native American, 1.1% Asian, 0.00% Pacific Islander, 0.2% from other races, and 1.0% from two or more races. Hispanic or Latino of any race were 0.9%.

There were 10,528 households, 29.5% had children under the age of 18 living with them, 62.6% were married couples living together and 29.4% were non-families. 24.5% of households were made up of individuals, and 12.6% were one person aged 65 or older. The average household size was 2.55 and the average family size was 3.09.

The age distribution was 24.2% under the age of 20, 2.5% from 20 to 24, 24.4% from 25 to 44, 29.6% from 45 to 64, and 16.8% 65 or older. The median age was 42.6 years. For every 100 females, there were 97.6 males.

The median household income was $66,680 and the median family income was $74,941. Males had a median income of $54,119 versus $40,625 for females. The per capita income for the borough was $30,474. About 3.8% of families and 4.8% of the population were below the poverty line, including 6.3% of those under age 18 and 3.2% of those age 65 or over.


  • Oakmont Country Club is wholly located within Plum's borders, according to Google Maps. The course has been consistently ranked as one of the five best by Golf Digest 100 Greatest Golf Courses in America. In 2007, Oakmont placed 5th by the magazine. It is one of only a few courses ranked every year in the top ten of the publication's history. The top 50 toughest courses ranks Oakmont also at #5, while ranks it at #3 overall. It hosted its ninth U.S. Open in 2016, the most of any course.
  • The portion of the Pennsylvania Turnpike from mile markers 49 through 55 crosses through Plum.


The Plum Borough School District serves the borough grades K–12. The elementary schools (grades K–4) are Center and Pivik. The middle elementary school is Holiday Park Elementary (grades 5-6). The junior high school is A.E. Oblock Junior High School (grades 7-8) and Plum Senior High School serves grades 9–12. The latest redistricting was approved by the Plum School Board in 2018. There were once three other elementary schools, which were called Renton Elementary School, Regency Park Elementary, and the other called Adlai E. Stevenson, both have since been torn down. Plum School District is governed by the Plum School Board.

Plum Borough is also serviced by the Plum Borough Community Library. The library houses the history room of the Allegheny Foothills Historical Society (the Historical Society also provides tours of the reconstructed Carpenter Family Log House in Boyce Park).

Notable people

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