Gilsum is located in Cheshire county New hampshire with a geographic area of square miles. The total population in Gilsum is 743 with 55.3% male and 44.7% female. Children under age 5 represent 5.5% of the population, under age 18 equal 17.5% of the population and over age 65 is 20.2% of the population. The median household income is $71,346, per capita income is $31,233. There are a total of 282 housing units with 91.1% owner occupied. Education includes 29.4% of residents that are high school graduates and 20.6% with a bachelor's degree or higher. The average temperature in Gilsum in the summer is 68 degrees, and in the winter 23 degrees.
