Duncansville is located in Blair county Pennsylvania with a geographic area of 0.5 square miles. The total population in Duncansville is 1,189 with 44.3% male and 55.7% female. Children under age 5 represent 5.4% of the population, under age 18 equal 17.1% of the population and over age 65 is 26.8% of the population. The median household income is $50,292, per capita income is $31,042. There are a total of 551 housing units with 50.1% owner occupied. Education includes 55.7% of residents that are high school graduates and 20.7% with a bachelor's degree or higher. The average temperature in Duncansville in the summer is 73 degrees, and in the winter 33 degrees.