Open Data

Delaware State agencies maintain large and open collections of data. This page is a repository for links to various open data sets published by state government. This page is not an exhaustive list; please visit the Open Data Portal for even more datasets, maps, charts and visual data.

If you know of data sets that should be linked-to from this page, or if there are data sets you cannot find that we can help you with, please let us know.


Delaware's Open Data Portal - A central repository for open data from state agencies and offices with interactive features and visual data like maps and charts. For developers, the portal offers data in machine-readable formats, with APIs (Application Programming Interfaces), geo-location data, embed codes, and more.

Open Data Council - The Delaware Open Data Council brings together a team from state government focused specifically on making more data available to members of the public. The Council is tasked with managing the Open Data Portal, promoting open data, establishing a statewide data strategy, and recommending data standards for public data.

Delaware FirstMap Data - FirstMap is the realization of the vision of the Delaware GIS Community for a self-service GIS for sharing data among State organizations, academia, local governments and the general public.

Business / Professional Licenses

Business Licenses - Search or download business license information.

Professional Licenses - Search and verify professional license.

Tip / Reminder

Looking for Disciplinary Actions or Least-Frequent Professional License Categories? Those are included in Delaware's Open Data category Licenses & Certification.


Demographic Data

Delaware Census — Census counts, historic census data, maps and population projections.

Delaware FirstMap — A site for sharing and discovering geospatial data about Delaware.

Delaware State Data Center - Resources from the Delaware Office of State Planning Coordination, the Delaware Office of Management and Budget and other partners.

Tip / Reminder

View more data sets for demographics on Delaware's Open Data Portal inluding Supplier Diversity and Student Enrollement.

Economic Data

Employer Database - Look up employers by industry with data provided by InfoUSA.

Employment - Current Employment Statistics (CES) provides most recent estimates of the number of jobs at employers in the state, broken out by industry.

Occupational Employment Statistics - Occupational Employment Statistics (OES) has estimates of employment and wages for about 500 different occupations.

Payroll Data - Quarterly Census of Employment & Wages (QCEW) data produced from employment and wage reports of employers subject to Unemployment Insurance coverage.

Projections - Two-year and ten-year employment projections for about 100 industries and 500 occupations, at the state and county level.

Unemployment - Local Area Unemployment Statistics (LAUS) generates estimates of the labor market activities of residents of the counties, cities, and State of Delaware.

Tip / Reminder

Delaware's Open Data Portal category for Economic Development include Delaware Opportunity Zones and Certified Minority-Owned Business Breakdown.


Delaware Public School GIS Layers — A collection of GIS datasets related to Delaware schools and school districts.

Delaware Department of Education's School Mapping - Maps and mapping tools to help you find your school, district, and legislator. You can also use these resources to find census and State congressional info.

Student Assessment Performance - The number of tested students, proficient students, and the corresponding proficiency rate for the key annual assessments administered during a given school year.

Tip / Reminder

The Education category on Delaware's Open Data Portal includes data sets like Educator Characteristics and Student Growth.

Election Data

Voter Registration Numbers - Registered voter totals by month, political party, with statistical reports, and an archive by year.

Campaign Finance Reports – view PDF campaign finance reports to candidate committees, PACs, and other political entities in the State

Tip / Reminder

Election data on Delaware's Open Data Portal include Senate Districts and Representative Districts.

Environmental Data

Delaware Water Quality - Information and resources on the Delaware water system.

Releases, Data - Recent reports on air pollution.

Delaware Environmental Navigator (DEN) – A mapping interface for environmental data

Tip / Reminder

Recreational Water Advisories and Underground Storage Tanks are included in Delaware's Open Data Portal category Energy & Environment.

Financial Data

State of Delaware Budget Information – View the State Budget and other documents such as the Capital Budget (building/property), the Grants-in-Aid Bill (grants to Delaware organizations), and other information.

Delaware’s Online Checkbook – A new portal to Delaware's spending data, including expenditures, state employee credit card payments, and revenue. Summary data is available by fiscal year, and visually represented in charts and graphs. Data for browsing, searching, and downloading includes payment information by state organization, expenditure category, vendor, check number, and fund type.

Delaware’s Bids and RFP site – The Bid Solicitation Directory is the State's central repository across all three branches of state government that have an open Request for Information (RFI), Request for Quote (RFQ), Invitation to Bid (ITB), and/or a Request for Proposal (RFP). The goal of this directory is to provide a centralized location to find state RFIs, ITBs and RFPs without requiring knowledge of the specific structure of state government.

Delaware Department of Finance Transparency Page: A collection of links to open financial data about Delaware government.

Tip / Reminder

More data sets on Government & Finance like Central Contract Line Item Spend and State and Federal Acronym Search in Delaware's Open Data Portal.

Health Data

Restaurant Inspections Reports - Information regarding inspections from the past two years are available on this site.

Delaware Public Health Statistics - A comprehensive collection of health statistics.

Public Health Publications and Reports (by topic) - A topical index of publications and reports within the Division of Public Health Website.

Tip / Reminder

More data sets on Health in Delaware's Open Data Portal like Average Medicaid Enrollment by Plan by Fiscal Year and Births.

Public Safety

Delaware Criminal Justice Council Reports – Reports on issues related to criminal justice in Delaware.

Delaware State Police Reports – Annual reports and and statistics published by the Delaware State Police.

Tip / Reminder

Researching the Inmate Population or Evacuation Routes? You'll find those in Delaware's Open Data category Public Safety.

Traffic/Transit Data

Please Note

The Department of Transportation offers several data feeds related to traffic and transit issues. Many of these feeds are used to supply data to the Department's Interactive Traffic Map.

Vehicle Volume Summary (Traffic Counts) - The Traffic Summary is an annual DelDOT publication that contains updated traffic data on each roadway segment in the highway network, organized by county and maintenance road number.

Roadway Functional Classification - The functional classification of Delaware roadways.

Transit Data - Includes DART Bus Schedules, bridges, roadways and traffic.

Registered Vehicles by Fuel Type - Monthly dataset of vehicles registered in Delaware summarized by fuel type.

State Rebates for Alternative Fuel Vehicles - Rebates paid to persons and companies for purchase or lease of alternative fuel vehicles.

Tip / Reminder

Airports and Bridges included in Delaware's Open Data Portal category Transportation.