Changing the way Connecticut uses data.

The Connecticut Data Collaborative is a public-private partnership that advocates for the public availability of open and accessible data to drive planning, policy, budgeting and decision making in Connecticut at the state, regional and local levels. We are a user-driven organization, serving nonprofits, advocates, policymakers, community groups, and funders in using data to drive policy and improve programs and services.

In addition to providing open access to structured and processed data, we can also work with you on to solve your custom data needs. Contact us for more information.



Our data portal contains over 135 datasets that we have curated and processed into a machine-readable structure. Use our custom data-exploration tools to narrow your selection, or download raw data in bulk and explore data on your own. You can browse by topic, search by organization, or search by dataset.

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Upcoming Events

  • 2016 CTData School of Data

    Join us June 28th for the 2016 CTData School of Data conference. This year, we invite policymakers, community-based organizations, students and more to learn from each other and share how we can improve our state and our data.

    Click here for more details.

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Recent Data Updates


New Data: Connecticut's Birth-to-Three System

Connecticut’s Birth to Three System (B23) supports families with infants and toddlers that have developmental delays to learn new ways to make everyday activities enhance the child’s development.

In-depth: Municipal Costs

Municipal Cost Drivers

After we released the first Fiscal Situation of our Municipalities story, we received a couple inquiries on the data for the cost drivers.

Business Formations in Connecticut

The Secretary of the State, Denise Merrill, is proud to partner with the CT Data Collaborative and provide to the public unprecedented free access to robust business registry data. In addition to making the data public through exploratory, web-based visualization tools, CTData presents a few of the interesting trends in the story below. As we build out the portal, we will continue to examine the trends in the data and share the stories.

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