GIS Data Products

Access Map Services
Frederick County provides access to our published ArcGIS Server Map Services. Please follow this link for more information on access to these services.  You can also see our list of published map services at

Download GIS Data
Frederick County offers a free GIS data download service.  A list of data layers available for download can be found on our GIS Base Data page.  Otherwise, please follow this link to get started with our GIS Data Ordering System.  

Order Data on CD or DVD
Our data products are available for purchase in CD or DVD format.  A list of data layers available for purchase can be found on our GIS Base Data page.  Go to our Order GIS Data page for more information.
Other External Resources
      GIS & Data

 Maryland Department of Natural Resources Maps and Map Data
Maryland’s iMap Portal
 Maryland Property View Downloadable GIS Files 
 Maryland State Data Center
 US Census Maps & Data 
Land Records

Maryland Department of Assessment and Taxations Real Property Search


While efforts have been made to ensure the accuracy of this data, Frederick County accepts no liability or responsibility for errors, omissions, or positional inaccuracies in the content of this data. Reliance on this data is at the risk of the user. The data is for illustrated purposes only and should not be used for surveying, engineering, or site-specific analysis.