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 Download GIS Data.  

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.

Please use the FAQ page for assistance in navigation of the various resources provided on our site.