THE GREENBRIAR LAND BRIEF
Land in the
Trap Rock and Conglomerate Uplands setting.
Greenbriar CDP has 1.56 square miles of land in Fairfax County. Its Census reference point is in Trap Rock and Conglomerate Uplands, within Northern Piedmont.
Rounded low hills, open valleys and irregular plains form a transition between Appalachian highlands and the coastal plain. The underlying geology mixes metamorphic, igneous and sedimentary rocks.
Regional context: Northern Piedmont ↗ · Classification at the Census reference point
Greenbriar and Fairfax County
Greenbriar is associated with Fairfax County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Greenbriar by land and water
The Census records <0.01 square miles of water within Greenbriar, or 0.5% of its total area. It is 3.3 percentage points lower than the 3.8% recorded for Fairfax County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Greenbriar CDP has 1.1 times the land area of nearby Navy CDP (1.36 square miles). These areas describe boundaries, not comparable property prices.

