Kingston is located in Rockingham county New hampshire with a geographic area of square miles. The total population in Kingston is 6,330 with 55.0% male and 45.0% female. Children under age 5 represent 2.8% of the population, under age 18 equal 15.6% of the population and over age 65 is 18.6% of the population. The median household income is $75,430, per capita income is $45,916. There are a total of 2,747 housing units with 81.3% owner occupied. Education includes 19.5% of residents that are high school graduates and 33.8% with a bachelor's degree or higher. The average temperature in Kingston in the summer is 68 degrees, and in the winter 23 degrees.