Bellingham is located in Norfolk county Massachusetts with a geographic area of 5.4 square miles. The total population in Bellingham is 4,216 with 44.0% male and 56.0% female. Children under age 5 represent 3.4% of the population, under age 18 equal 17.6% of the population and over age 65 is 25.4% of the population. The median household income is $62,243, per capita income is $46,902. There are a total of 2,074 housing units with 66.9% owner occupied. Education includes 26.1% of residents that are high school graduates and 33.8% with a bachelor's degree or higher. The average temperature in Bellingham in the summer is 70 degrees, and in the winter 30 degrees.