Mapping & Geographic Information

The Loudoun County Office of Mapping and Geographic Information provides data, mapping, and analytical services to county agencies and the public and maintains the county's Geographic Information System (GIS).

Loudoun County implemented GIS software in 1986, at the forefront of its popularity. The county’s GIS has received numerous awards over the years, most recently from Esri for 30 Years of Excellence in GIS (2016).