Guilford is located in New haven county Connecticut with a geographic area of square miles. The total population in Guilford is 22,164 with 50.0% male and 50.0% female. Children under age 5 represent 5.2% of the population, under age 18 equal 21.1% of the population and over age 65 is 24.5% of the population. The median household income is $108,243, per capita income is $62,405. There are a total of 8,482 housing units with 86.0% owner occupied. Education includes 15.0% of residents that are high school graduates and 60.1% with a bachelor's degree or higher. The average temperature in Guilford in the summer is 68 degrees, and in the winter 27 degrees.
