Stoneham is located in Middlesex county Massachusetts with a geographic area of 6.0 square miles. The total population in Stoneham is 23,625 with 48.8% male and 51.2% female. Children under age 5 represent 6.6% of the population, under age 18 equal 19.3% of the population and over age 65 is 19.7% of the population. The median household income is $103,104, per capita income is $51,962. There are a total of 9,829 housing units with 66.2% owner occupied. Education includes 22.3% of residents that are high school graduates and 48.7% with a bachelor's degree or higher. The average temperature in Stoneham in the summer is 70 degrees, and in the winter 30 degrees.