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

New and Improved Master Address Repository

We have updated the Master Address Repository (MAR) application to make it easier for everyone to use!

The new MAR works better on mobile devices, so you can use it on phones and tablets. It also follows modern design and accessibility standards while keeping a similar layout, making it more usable for people who rely on assistive technologies.

We have also folded in and expanded features from the old “Validator” application. In the new MAR, you can:

  • Search parcels in the same way you search for addresses
  • Export filtered or selected search results
  • Identify parcels that do or do not have associated addresses
Fairfax Virtual Assistant