Bolton is located in Worcester county Massachusetts with a geographic area of square miles. The total population in Bolton is 5,356 with 49.8% male and 50.2% female. Children under age 5 represent 6.3% of the population, under age 18 equal 28.1% of the population and over age 65 is 13.4% of the population. The median household income is $167,708, per capita income is $61,348. There are a total of 1,777 housing units with 94.5% owner occupied. Education includes 6.0% of residents that are high school graduates and 79.4% with a bachelor's degree or higher. The average temperature in Bolton in the summer is 70 degrees, and in the winter 30 degrees.