The town of Londonderry is located in the county of Rockingham. It covers a total area of 108.5 sq. km. The economy of the city revolves around industries involved in advertising, aviation, arts and crafts, automotive, construction, textiles, cleaning, camping equipment, information technology, courier, pharmaceuticals, electronic equipment, health, auto insurance and publishing, enhance the economic viability of the city. The local inhabitants are engaged to service-oriented jobs elated to auto repair, carpet rug cleaning, childcare services, courier service, court reporting, data processing, health and legal services, enhance the local economic development of the city.