Burlington is located in Middlesex county Massachusetts with a geographic area of 11.8 square miles. The total population in Burlington is 28,077 with 48.5% male and 51.5% female. Children under age 5 represent 4.5% of the population, under age 18 equal 18.7% of the population and over age 65 is 22.0% of the population. The median household income is $121,433, per capita income is $57,288. There are a total of 10,625 housing units with 75.0% owner occupied. Education includes 13.3% of residents that are high school graduates and 64.5% with a bachelor's degree or higher. The average temperature in Burlington in the summer is 70 degrees, and in the winter 30 degrees.