Dartmouth is located in Bristol county Massachusetts with a geographic area of square miles. The total population in Dartmouth is 34,062 with 47.6% male and 52.4% female. Children under age 5 represent 3.3% of the population, under age 18 equal 15.9% of the population and over age 65 is 20.2% of the population. The median household income is $85,783, per capita income is $37,982. There are a total of 11,723 housing units with 78.3% owner occupied. Education includes 24.6% of residents that are high school graduates and 38.9% with a bachelor's degree or higher. The average temperature in Dartmouth in the summer is 70 degrees, and in the winter 30 degrees.