Barrington is located in Strafford county New hampshire with a geographic area of square miles. The total population in Barrington is 9,130 with 50.3% male and 49.7% female. Children under age 5 represent 6.0% of the population, under age 18 equal 23.2% of the population and over age 65 is 11.9% of the population. The median household income is $98,275, per capita income is $43,148. There are a total of 3,290 housing units with 92.1% owner occupied. Education includes 23.6% of residents that are high school graduates and 44.5% with a bachelor's degree or higher. The average temperature in Barrington in the summer is 68 degrees, and in the winter 23 degrees.