The town of Loudon is located in the county of Merrimack. It covers a total area of 123.0 sq. km. The economy of the city revolves around industries involved in advertising, automotive, construction, industrial and commercial machinery and telecommunication, contribute to the local economy of the city. Commercial spaces are utilized by campgrounds, parks, parking lot stations, greenhouses, farmers market, convenience stores and beverage shops, contribute to the local economy in a positive way.