South buffalo township is located in Armstrong county Pennsylvania with a geographic area of square miles. The total population in South buffalo township is 2,577 with 51.4% male and 48.6% female. Children under age 5 represent 2.5% of the population, under age 18 equal 13.5% of the population and over age 65 is 21.8% of the population. The median household income is $77,414, per capita income is $39,488. There are a total of 1,096 housing units with 86.4% owner occupied. Education includes 36.2% of residents that are high school graduates and 28.0% with a bachelor's degree or higher. The average temperature in South buffalo township in the summer is 73 degrees, and in the winter 33 degrees.