Williamstown is located in Orange county Vermont with a geographic area of 3.4 square miles. The total population in Williamstown is 1,253 with 56.8% male and 43.2% female. Children under age 5 represent 2.2% of the population, under age 18 equal 24.2% of the population and over age 65 is 12.8% of the population. The median household income is $71,518, per capita income is $30,755. There are a total of 495 housing units with 85.9% owner occupied. Education includes 38.8% of residents that are high school graduates and 18.6% with a bachelor's degree or higher. The average temperature in Williamstown in the summer is 65 degrees, and in the winter 19 degrees.