Use the links below to access spatial data like shapefiles or aerial and satellite images.
U.S. Census Bureau
Maps and Data Find geographic data and products such as the TIGER/Line Shapefiles, KMLs, TIGERweb, cartographic boundary files, geographic relationship files, and reference and thematic maps.
Maryland OpenData Main portal for Statewide data on a wide range of themes.
MD iMap Main portal for state wide spatial data on a wide range of themes.
Baltimore Open City GIS Data is Baltimore's public platform for exploring and downloading open data, discovering and building apps, and engaging to solve important local issues. Analyze and combine Open Datasets using maps, as well as develop new web and mobile applications.