Clay township is located in Butler county Pennsylvania with a geographic area of 2.2 square miles. The total population in Clay township is 2,572 with 51.0% male and 49.0% female. Children under age 5 represent 5.2% of the population, under age 18 equal 18.4% of the population and over age 65 is 16.1% of the population. The median household income is $66,204, per capita income is $31,217. There are a total of 1,040 housing units with 85.7% owner occupied. Education includes 48.5% of residents that are high school graduates and 20.5% with a bachelor's degree or higher. The average temperature in Clay township in the summer is 73 degrees, and in the winter 33 degrees.