Auburn is located in Rockingham county New hampshire with a geographic area of square miles. The total population in Auburn is 5,513 with 56.1% male and 43.9% female. Children under age 5 represent 5.2% of the population, under age 18 equal 19.6% of the population and over age 65 is 13.2% of the population. The median household income is $110,163, per capita income is $47,519. There are a total of 1,923 housing units with 90.7% owner occupied. Education includes 14.4% of residents that are high school graduates and 51.2% with a bachelor's degree or higher. The average temperature in Auburn in the summer is 68 degrees, and in the winter 23 degrees.