Many organizations provide ready access to downloadable data. These organizations represent the state, regional, municipal, county and federal levels of government. A wealth of information and valuable resources are available through the many links provided below.
Additional resources are also available that highlight existing data through web mapping applications. The Maryland State Geographic Information Committee (MSGIC) and the GIO Office strive to share this information and resources with the GIS community.
Delaware FirstMap Open Data
District of Columbia Data Catalog
Maryland Department of Planning, Land Use/Land Cover
Maryland Department of Planning, Property Data
Maryland Department of Planning, State Data Center
Maryland Geological Survey
Maryland State Highway Administration
Maryland Open Data Portal
New Jersey Department of Environmental Protection (NJDEP)
New Jersey Office of GIS - Open Data
New Jersey Geographic Information Network (NJGIN)
North Carolina Geospatial Portal
Pennsylvania Geospatial Data Clearinghouse (PASDA)
Virginia Geographic Information Network (VGIN)
West Virginia Office of GIS Coordination
Please contact the GIO Office at firstname.lastname@example.org to provide a new state GIS data download site for the list.
100 Community Place, Crownsville, MD 21032
300-301 West Preston Street, Baltimore, MD 21201