Millville is located in Worcester county Massachusetts with a geographic area of square miles. The total population in Millville is 3,249 with 46.6% male and 53.4% female. Children under age 5 represent 3.3% of the population, under age 18 equal 19.8% of the population and over age 65 is 16.5% of the population. The median household income is $79,647, per capita income is $40,374. There are a total of 1,305 housing units with 83.7% owner occupied. Education includes 24.4% of residents that are high school graduates and 24.3% with a bachelor's degree or higher. The average temperature in Millville in the summer is 70 degrees, and in the winter 30 degrees.