Marlborough is located in Hartford county Connecticut with a geographic area of square miles. The total population in Marlborough is 6,351 with 50.1% male and 49.9% female. Children under age 5 represent 4.6% of the population, under age 18 equal 21.7% of the population and over age 65 is 16.6% of the population. The median household income is $113,547, per capita income is $50,947. There are a total of 2,289 housing units with 89.0% owner occupied. Education includes 15.2% of residents that are high school graduates and 51.5% with a bachelor's degree or higher. The average temperature in Marlborough in the summer is 68 degrees, and in the winter 27 degrees.
