Groton is located in Caledonia county Vermont with a geographic area of 2.2 square miles. The total population in Groton is 569 with 50.1% male and 49.9% female. Children under age 5 represent 1.6% of the population, under age 18 equal 11.6% of the population and over age 65 is 16.0% of the population. The median household income is $46,696, per capita income is $21,046. There are a total of 204 housing units with 69.1% owner occupied. Education includes 23.0% of residents that are high school graduates and 27.9% with a bachelor's degree or higher. The average temperature in Groton in the summer is 65 degrees, and in the winter 19 degrees.