About GIS and Mapping Services

GIS and Mapping Services administers the county Geographic Information System (GIS) and My GIS OneView. Our mission is to coordinate, manage and facilitate GIS at departmental, office and enterprise levels. We create and manage E911 site addresses and street names. We serve as primary custodian for county GIS data, aerial imagery and LiDAR topography contours. GIS and Mapping Services fulfills public requests for GIS data, mapping and imagery services.

MyGIS OneView

Parcel information is UPDATED MONTHLY.

MyGIS OneView is an interactive public map resource to access all-purpose property, land, and other location information for the county. It replaces the former iGIS Map Portal and provides the same functionality.

Guide and Video Tutorials

Download a printer-friendly guide on how to use MyGIS OneView.

Tutorial videos are provided as a complete playlist as well as individual topics. Links are provided to individual topics.

• Navigating the App
• Print Tool
• Search Tool
• Draw Tool
• Get Coordinates
• Measure Tool
• Advanced Parcels Query
• Select Parcels or Addresses

Additional GIS Services

Map Gallery

Miscellaneous Maps

Board of Supervisors Districts

Precinct Maps (Updated 2022)

Map and Data Disclaimer

Map and GIS data available are to be used for reference purposes only. The Board of Supervisors and Planning & GIS Services are not responsible for any inaccuracies. No responsibility is assumed for damages or other liabilities due to the accuracy, availability, use or misuse of the website.

Maps and GIS data provided are not to be construed or used as a legal determination of official county records. Maps and GIS data are believed to be accurate as of the date of use but is not guaranteed.

In no event will Montgomery County be liable for any damages, including loss of data, lost profits, business interruption, loss of business information or other pecuniary loss that might arise from the use of this website.