Grafton is located in Worcester county Massachusetts with a geographic area of square miles. The total population in Grafton is 19,031 with 50.4% male and 49.6% female. Children under age 5 represent 6.0% of the population, under age 18 equal 23.4% of the population and over age 65 is 13.3% of the population. The median household income is $103,383, per capita income is $48,007. There are a total of 7,169 housing units with 71.9% owner occupied. Education includes 20.1% of residents that are high school graduates and 55.2% with a bachelor's degree or higher. The average temperature in Grafton in the summer is 70 degrees, and in the winter 30 degrees.
