Candia is located in Rockingham county New hampshire with a geographic area of square miles. The total population in Candia is 3,942 with 52.7% male and 47.3% female. Children under age 5 represent 5.8% of the population, under age 18 equal 15.1% of the population and over age 65 is 17.0% of the population. The median household income is $99,167, per capita income is $46,316. There are a total of 1,478 housing units with 96.6% owner occupied. Education includes 19.7% of residents that are high school graduates and 32.7% with a bachelor's degree or higher. The average temperature in Candia in the summer is 68 degrees, and in the winter 23 degrees.