GIS and Mapping Services

CONTACT INFORMATION: All public resources of the GIS Division are now available online. For public assistance, inquiries through email are responded to more rapidly than those via phone messages. County staff should utilize the internal Help Desk system for support.
703-324-2712 TTY 711
12000 Government Center Parkway
Fairfax, VA 22035
Michael Liddle
GIS Program Director


GIS Day is a global event during which GIS (Geographic Information Systems) users work to expand the understanding of how GIS technology and geography make a difference in our lives. GIS, a computer-based tool used to map and analyze features and events, combines the power of a database with the visualization capabilities offered by maps. Hundreds of thousands of people in the world use GIS to solve problems in areas such as environmental protection, pollution, health care, land use, asset deployment and routing, natural resources, conservation, business efficiency, education, and social inequities.

GIS Day provides an opportunity to recognize effective and creative use of spatial tools by Fairfax County staff to better serve agencies and constituents.

GIS Excellence Gallery 2023

The 2023 GIS Excellence Gallery online interactive collection showcases the GIS-related work of Fairfax County employees and agencies over the last year. 

GIS Day 2023 Open House

  • Representatives from county agencies were on site at the Government Center on GIS Day 2023 to demonstrate and discuss the spatial tools and products that help them in their work, improve business processes, and engage and inform the public.

Fairfax Virtual Assistant