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The Grid Maps show all public road systems and other features at a scale of 1:12,0000.

Maryland Map with Counties

These Grid Maps cover all interstate, US, and state highways; county, local and municipal roads, other transportation systems such as air and seaports; reservations and other public lands; political boundaries, drainage and streams, large open bodies of water and some public buildings.


The Grid Maps are updated annually and available as PDF files.  To view, download, or print PDF files, you must have Adobe Reader installed on your computer.  Click here to download a free copy of Adobe Reader.  If you already have Adobe Reader installed, click the county of interest on the map.  The page will then display the Grid Maps within that county.  Full sized printed copies of Grid Maps are approximately 24"x38".


Please Note: The Grid Maps range in file size from approximately .5MB to 40MB.  The files may take a moment to display.  Please be patient while the image loads.


To buy a hard copy of a Grid Map, click here.
Each Grid Map costs $10.00, which includes shipping and handling.

GarrettAlleganyWashingtonFrederickFrederickCarrollBaltimoreHarfordCecilBaltimore CityKentHowardMontgomeryAnne ArundelPrince George'sCharlesCalvertSt. Mary'sQueen Anne'sCarolineTalbotWorcesterWicomicoSomersetDorchester