GIS Data

Data is the foundation of GIS, making it a valuable resource for governments, students, researchers and the private sector. Fairfax County GIS & Mapping Services provides access to many free GIS datasets on our Open Data page. We also have various topographic data resources, including LiDAR data and applications, and resources for viewing our aerial photography collection. By accessing any of the data, maps, or applications provided by Fairfax County, you agree to the terms in our disclaimer.

The Geospatial Property Data Guide

Learn about the types of property data maintained and offered by the GIS & Mapping Services Division through an interactive guide.

GIS Open Data

Browse over 120 GIS data layers available for viewing/downloading. Search using keywords or browse by category.

Aerial Photography

View multiple years of aerial photography in our online viewer and find other sources of imagery.

Topography Data

View the county's Light Detection And Ranging (LiDAR) elevation data and applications and resources for using it.

Fairfax Virtual Assistant