East haddam is located in Middlesex county Connecticut with a geographic area of square miles. The total population in East haddam is 8,989 with 51.7% male and 48.3% female. Children under age 5 represent 4.5% of the population, under age 18 equal 17.2% of the population and over age 65 is 21.1% of the population. The median household income is $95,685, per capita income is $51,773. There are a total of 3,813 housing units with 85.2% owner occupied. Education includes 26.2% of residents that are high school graduates and 39.1% with a bachelor's degree or higher. The average temperature in East haddam in the summer is 68 degrees, and in the winter 27 degrees.