Loudon is located in Merrimack county New hampshire with a geographic area of 1.8 square miles. The total population in Loudon is 830 with 43.6% male and 56.4% female. Children under age 5 represent 0.0% of the population, under age 18 equal 14.9% of the population and over age 65 is 39.8% of the population. The median household income is $114,000, per capita income is $47,869. There are a total of 320 housing units with 90.0% owner occupied. Education includes 30.9% of residents that are high school graduates and 40.0% with a bachelor's degree or higher. The average temperature in Loudon in the summer is 68 degrees, and in the winter 23 degrees.
