Loudoun County’s Base Map Update Project

Loudoun County, Virginia located within the Washington, D.C. metropolitan area, is approximately 520 square miles and has been one of the most-affluent and fastest growing U.S. counties for the last decade. The County’s eastern portion is developing rapidly, while many western areas remain rural. Recently, however, development has expanded into these historically rural areas. The rapidly changing landscape and growing population have necessitated aggressive maintenance of many spatial data sets, particularly land records and the County’s base map. A base map typically refers to a representation of geographic features that are visible on the ground in an aerial image. They provide the foundation or reference upon which other data layers can be developed or mapped, and are the foundation of the County’s geographic information system (GIS).