All data are stored in a database with private and public sections. The Private area is secure behind the State firewall, accessible to only those on the State network. The public area is available to all users. DTI works with both public and private owners to provide access to their data and to ensure the most current data are available.
FirstMap is hosting a variety of datasets via map, feature and image services, organized by ISO Categories.
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. Geocoder Service
If you have any difficulty finding a data layer, have any questions, or want to contribute data, please email the FirstMap team.
Delaware has a diverse range of imagery going back as far as 1937. Complete metadata and specifications are in our Imagery Metadata document.
For additional information, please email us at FirstMap@delaware.gov