Hollis is located in Hillsborough county New hampshire with a geographic area of square miles. The total population in Hollis is 7,973 with 50.2% male and 49.8% female. Children under age 5 represent 4.4% of the population, under age 18 equal 24.5% of the population and over age 65 is 19.9% of the population. The median household income is $131,745, per capita income is $65,818. There are a total of 2,959 housing units with 91.6% owner occupied. Education includes 16.7% of residents that are high school graduates and 60.6% with a bachelor's degree or higher. The average temperature in Hollis in the summer is 68 degrees, and in the winter 23 degrees.
