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Find a Commonwealth ResourceLoudoun County
Loudoun County, Office of Mapping and Geographic Information (OMAGI) has a seamless countywide base map geodatabase that can be used as a reference when mapping all other data. Base Map data layers include…
Updated Oct 10, 2026
Loudoun County
More Metadata Water Bodies are used for water supply planning, the administration of related zoning restrictions, and to locate water supplies in rural areas for fighting fires. Supplemental_Information: Data are stored…
Updated Oct 10, 2026
Loudoun County
More Metadata Road Casings are a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. Captured as polygons, these features represent roads, parking lots,…
Updated Oct 10, 2026
Loudoun County
More Metadata Building Footprints are a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. The polygon features represent the outlines of buildings and…
Updated Oct 10, 2026
Loudoun County
More Metadata The Commonwealth of Virginia grants certain powers to incorporated municipalities. There are seven towns in the County. Washington Dulles International Airport is also included due to its jurisdictional…
Updated Oct 10, 2026
Prince William County
1" = 5280' map shows important features and locations throughout the County. Recommended print size: 31" X 37".
Updated Aug 7, 2026
Prince William County
1" = 5280' map shows important features and locations throughout the County. Recommended print size: 31" X 37".
Updated Mar 24, 2026
