Liberty borough is located in Allegheny county Pennsylvania with a geographic area of 1.4 square miles. The total population in Liberty borough is 2,381 with 45.8% male and 54.2% female. Children under age 5 represent 4.0% of the population, under age 18 equal 16.8% of the population and over age 65 is 21.2% of the population. The median household income is $61,140, per capita income is $33,633. There are a total of 1,180 housing units with 77.2% owner occupied. Education includes 28.4% of residents that are high school graduates and 33.3% with a bachelor's degree or higher. The average temperature in Liberty borough in the summer is 73 degrees, and in the winter 33 degrees.