Fitzwilliam is located in Cheshire county New hampshire with a geographic area of square miles. The total population in Fitzwilliam is 2,299 with 53.3% male and 46.7% female. Children under age 5 represent 5.7% of the population, under age 18 equal 14.5% of the population and over age 65 is 22.9% of the population. The median household income is $68,611, per capita income is $38,588. There are a total of 1,004 housing units with 90.1% owner occupied. Education includes 29.0% of residents that are high school graduates and 38.3% with a bachelor's degree or higher. The average temperature in Fitzwilliam in the summer is 68 degrees, and in the winter 23 degrees.