Lyndon is located in Caledonia county Vermont with a geographic area of 0.3 square miles. The total population in Lyndon is 113 with 61.9% male and 38.1% female. Children under age 5 represent 0.0% of the population, under age 18 equal 0.0% of the population and over age 65 is 8.8% of the population. The median household income is $37,978, per capita income is $20,373. There are a total of 75 housing units with 13.3% owner occupied. Education includes 64.0% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Lyndon in the summer is 65 degrees, and in the winter 19 degrees.