South kingstown is located in Washington county Rhode island with a geographic area of square miles. The total population in South kingstown is 30,651 with 47.4% male and 52.6% female. Children under age 5 represent 3.1% of the population, under age 18 equal 15.0% of the population and over age 65 is 20.7% of the population. The median household income is $96,526, per capita income is $40,342. There are a total of 10,627 housing units with 73.7% owner occupied. Education includes 15.8% of residents that are high school graduates and 57.2% with a bachelor's degree or higher. The average temperature in South kingstown in the summer is 69 degrees, and in the winter 33 degrees.