South dennis is located in Barnstable county Massachusetts with a geographic area of 4.6 square miles. The total population in South dennis is 2,895 with 45.9% male and 54.1% female. Children under age 5 represent 6.6% of the population, under age 18 equal 13.6% of the population and over age 65 is 32.4% of the population. The median household income is $61,971, per capita income is $34,686. There are a total of 1,373 housing units with 73.3% owner occupied. Education includes 27.2% of residents that are high school graduates and 33.5% with a bachelor's degree or higher. The average temperature in South dennis in the summer is 70 degrees, and in the winter 30 degrees.
