Ashburnham is located in Worcester county Massachusetts with a geographic area of square miles. The total population in Ashburnham is 6,304 with 49.9% male and 50.1% female. Children under age 5 represent 6.3% of the population, under age 18 equal 24.2% of the population and over age 65 is 13.7% of the population. The median household income is $113,558, per capita income is $43,423. There are a total of 2,087 housing units with 92.0% owner occupied. Education includes 19.1% of residents that are high school graduates and 38.7% with a bachelor's degree or higher. The average temperature in Ashburnham in the summer is 70 degrees, and in the winter 30 degrees.