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Find a Commonwealth ResourceFairfax County
These areas were mapped as marine clays in previous surveys. Marine clays are high shrink-swell soils that can cause foundation distress. They are sometimes referred to as Potomac Clays or Deltaic Clays.
Updated Oct 8, 2026
Fairfax County
Non-marine clay shrink swell soils in Fairfax County. These are soils containing other shrinking-swelling clays that can lead to foundation distress if precautions are not taken during design and construction.
Updated Oct 8, 2026
Fairfax County
Quarries in Fairfax County.
Updated Oct 8, 2026
Fairfax County
Potential asbestos containing soils in Fairfax County. These soils are mapped over naturally asbestos-containing bedrock. Safety precautions must be taken during construction. Orange soils, which overlie a majority of…
Updated Oct 8, 2026
Fairfax County
Human services offices within Fairfax County. “HS_Region” is the office for each human services region, “DFS_Area” is the offices for the Department of Family Services Areas; “CPS_Region” is offices for Child Protective…
Updated Oct 8, 2026
Fairfax County
Marumsco soils in Fairfax County. Marumsco soils are mapped in complexes with other soil types. The complexes are highly variable and consist of combinations of clays, silts, sands, and gravels. They may also be…
Updated Oct 8, 2026
Fairfax County
Watersheds within Fairfax County. There are 30 watersheds delineated across Fairfax County.
Updated Oct 8, 2026
Fairfax County
Landfill properties in Fairfax County.
Updated Oct 8, 2026
Fairfax County
The voting precincts within Fairfax County.
Updated Oct 8, 2026
Fairfax County
Voting locations for precincts within Fairfax County. Some features are the voting locations for 2 precincts and are identified in the attributes by having a value in the secondary precinct identifier.
Updated Oct 8, 2026
Arlington County - GIS Portal
The Map Quads layer contains polygon features defining the boundaries of individual map quadrants used for cartographic and GIS reference purposes in Arlington County, Virginia. These map quadrant boundaries provide a…
Updated Nov 2, 2026
Arlington County - GIS Portal
The Map Sheets layer contains polygon features defining the boundaries of individual map sheets used for cartographic and GIS reference purposes in Arlington County, Virginia. These map sheet boundaries provide a…
Updated Nov 2, 2026
Datathon 2025
This feature layer displays Park & Ride lots across the Commonwealth of Virginia. For more information visit the Virginia Park & Ride site .
Updated Oct 17, 2026
Fairfax County
This data set contains all Metrorail Stations in Virginia. The data set was originally obtained from the Metro Washington Council of Governments (MWCOG) GIS data clearinghouse and snapped to the Fairfax County railroad…
Updated Oct 8, 2026
Fairfax County
This data set contains all Metrorail lines in Virginia. The data set was originally obtained from the Metro Washington Council of Governments (MWCOG) GIS data clearinghouse and conflated to the Fairfax County railroad…
Updated Oct 8, 2026
Fairfax County
This layer contains the definitive boundaries of Fairfax County's: Urban Center, Suburban Centers, Community Business Centers, Transit Station Areas, Industrial Areas, and Large Institutional Land Areas as defined in…
Updated Oct 8, 2026
Fairfax County
Schools, centers, and administrative support locations for Fairfax County public schools. Contact: Fairfax County Public School (FCPS) GIS Data Accessibility: Publicly Available Update Frequency: Annually Last Revision…
Updated Oct 8, 2026
Fairfax County
Boundaries of attendance areas for elementary school Advanced Academic Program (AAP). It depicts all of the AAP elementary school attendance areas for Fairfax County Public Schools. Contact: Fairfax County Public School…
Updated Oct 8, 2026
Fairfax County
Boundaries of attendance areas for middle school Advanced Academic Program (AAP). It depicts all of the AAP middle school attendance areas for Fairfax County Public Schools. Contact: Fairfax County Public School (FCPS)…
Updated Oct 8, 2026
Fairfax County
School regions within Fairfax County. Regions are administrative divisions of the Fairfax County Public Schools and there are 6 regions in Fairfax County. Contact: Fairfax County Public School (FCPS) GIS Data…
Updated Oct 8, 2026
