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compass image FirstMap Data

FirstMap hosts a variety of Services which include map and feature services organized by ISO Categories, image services, and a geocoding service.

The services can be found as URL links in each category below, or through FirstMap Open Data which is in the last category.

If you have any difficulty finding a data layer, have any questions, or want to contribute data, please email the  FirstMap Team.

Map, Feature, and Aerial Imagery Services

  • Map and Feature services provide basic access to the underlying data which allows users to identify, query and display the data within an ArcMap/ArcGIS Pro project.
  • Data in a Map service are symbolized and cannot be changed; however, all features are displayed.
  • Feature services provide expanded access to the underlying data allowing users to change symbology and analyze data within an ArcMap/ArcGIS Pro project.
  • Delaware has a diverse range of imagery going back as far as 1937. Complete metadata and specifications are in our Imagery Metadata document.
FirstMap 1.0
  • Map, Feature, and Aerial Imagery services for FirstMap 1.0 can be found in the FirstMap 1.0 Public Rest Services.
       NOTE: FirstMap 1.0 Rest Services will be decommissioned at the end of the year.
FirstMap 2.0

Geocoder Service

Geocoding services allow users to find discrete point locations from their address data. These point locations are calculated based on a physical street address. The FirstMap geocoder is a composite geocoding service.

Open Data

FirstMap Open Data provides the ability to search, filter, and download Delaware's publicly available spatial data in a variety of formats including shapefile and KML.  The Regional links are to the GIS pages for the states that surround Delaware.

For additional information, please email the FirstMap Team.