Plum is located in Allegheny county Pennsylvania with a geographic area of 28.6 square miles. The total population in Plum is 27,137 with 49.0% male and 51.0% female. Children under age 5 represent 4.4% of the population, under age 18 equal 21.5% of the population and over age 65 is 20.2% of the population. The median household income is $82,704, per capita income is $39,416. There are a total of 11,058 housing units with 81.8% owner occupied. Education includes 23.8% of residents that are high school graduates and 41.3% with a bachelor's degree or higher. The average temperature in Plum in the summer is 73 degrees, and in the winter 33 degrees.
