Sugar hill is located in Grafton county New hampshire with a geographic area of square miles. The total population in Sugar hill is 660 with 37.4% male and 62.6% female. Children under age 5 represent 1.1% of the population, under age 18 equal 14.8% of the population and over age 65 is 29.4% of the population. The median household income is $104,500, per capita income is $117,399. There are a total of 268 housing units with 92.5% owner occupied. Education includes 14.2% of residents that are high school graduates and 61.6% with a bachelor's degree or higher. The average temperature in Sugar hill in the summer is 68 degrees, and in the winter 23 degrees.