Harrisville is located in Butler county Pennsylvania with a geographic area of 0.8 square miles. The total population in Harrisville is 969 with 47.4% male and 52.6% female. Children under age 5 represent 8.8% of the population, under age 18 equal 21.5% of the population and over age 65 is 27.2% of the population. The median household income is $66,771, per capita income is $28,532. There are a total of 335 housing units with 78.8% owner occupied. Education includes 46.9% of residents that are high school graduates and 28.7% with a bachelor's degree or higher. The average temperature in Harrisville in the summer is 73 degrees, and in the winter 33 degrees.