​If a picture is worth a thousand words, then a map tells even more. Maps are a universal way to communicate. People have used maps for as long as they've wondered, 'What's over there?' A map is a scaled-down drawing of the real world that shows a lot of information about places.

MDP has been using geographic information systems (GIS) to answer questions and create scenarios for more than 40 years. A GIS is just a map. When you use an online map for directions, you're using a GIS. MDP is happy to share some of our most valuable data with the public as interactive GIS maps.​​

Updated Statewide Generalized Zoning

MDP is happy to announce the availability of the 2025 Statewide Generalized Zoning Data​. MDP collaborated with Maryland’s 23 counties and Baltimore City to update the Generalized Zoning for those jurisdictions, considering the local zoning for both map and ordinance changes. Please visit our Statewide Generalized Zoning ArcGIS StoryMap​​ and Webapp for more information! ​

​Additional online mapping applications for the State are also available at the MDiMAP portal.​​

Full Listing​​​​​​

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