Lunenburg is located in Essex county Vermont with a geographic area of 2.5 square miles. The total population in Lunenburg is 376 with 42.6% male and 57.4% female. Children under age 5 represent 3.5% of the population, under age 18 equal 25.5% of the population and over age 65 is 28.2% of the population. The median household income is $41,250, per capita income is $17,051. There are a total of 158 housing units with 83.5% owner occupied. Education includes 51.3% of residents that are high school graduates and 24.1% with a bachelor's degree or higher. The average temperature in Lunenburg in the summer is 65 degrees, and in the winter 19 degrees.