Cornwall is located in Lebanon county Pennsylvania with a geographic area of 9.7 square miles. The total population in Cornwall is 4,319 with 53.6% male and 46.4% female. Children under age 5 represent 4.7% of the population, under age 18 equal 15.0% of the population and over age 65 is 31.8% of the population. The median household income is $85,735, per capita income is $42,126. There are a total of 1,756 housing units with 76.3% owner occupied. Education includes 34.1% of residents that are high school graduates and 41.3% with a bachelor's degree or higher. The average temperature in Cornwall in the summer is 73 degrees, and in the winter 33 degrees.
