GIS is extensively used to plan, build, and operate telecommunication networks and associated services. The applications of GIS include activities such as planning transmission capacities, locating cellular telephone transmitters, recording customer complaints, and using geodemographic information to find new customers.

GIS is being used to determine the most suitable method of transmission (wireless or cable), plan network layouts, and target customers. Topography, population density, and predicted population trends are important considerations when considering transmission method, while detailed demographic information, including employment, affluence, and neighborhood characteristics, help telecommunications providers to assess the best potential areas for new customers.