Wenham is located in Essex county Massachusetts with a geographic area of square miles. The total population in Wenham is 5,208 with 44.1% male and 55.9% female. Children under age 5 represent 4.1% of the population, under age 18 equal 14.5% of the population and over age 65 is 13.6% of the population. The median household income is $142,734, per capita income is $50,766. There are a total of 1,361 housing units with 88.2% owner occupied. Education includes 8.4% of residents that are high school graduates and 70.6% with a bachelor's degree or higher. The average temperature in Wenham in the summer is 70 degrees, and in the winter 30 degrees.