Monson is located in Hampden county Massachusetts with a geographic area of square miles. The total population in Monson is 8,775 with 50.8% male and 49.2% female. Children under age 5 represent 4.7% of the population, under age 18 equal 17.2% of the population and over age 65 is 21.7% of the population. The median household income is $76,612, per capita income is $42,770. There are a total of 3,559 housing units with 84.6% owner occupied. Education includes 29.7% of residents that are high school graduates and 27.4% with a bachelor's degree or higher. The average temperature in Monson in the summer is 70 degrees, and in the winter 30 degrees.