Changing the way Connecticut uses data.

Striving for informed decision-making across Connecticut, we empower an ecosystem of data users by democratizing access to public data and building data literacy.

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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Recent Data Updates


Determining state-to-state migration with tax returns

The IRS has released Migration Data for 2015-2016. These data look at year-to-year address changes reported on individual income tax returns. These data track state and county level in and out flows of tax returns along with providing aggregate Adjusted Gross Income (AGI). A net-migration number for states and counties can be calculated looking at the difference between the inflows and outflows.

Even though AGI is provided, it cannot be used to calculate income losses ...

On air: WTIC 1080 The Connection, talking about data

Tune in Sunday morning at 5:30am to WTIC News Talk 1080 to hear, Michelle Riordan Nold, talking about data with Ann Baldwin and Lisa DeMattais-Lepore from The Connection. If you miss the broadcast you can listen to a recording found here.

Population Growth in Connecticut

The Census Bureau has released the 2017 population estimates for all towns in Connecticut. 

From July 1, 2016 to July 1, 2017: 

  • Connecticut's net population grew by an estimated 499 people. 
  • Stamford tops the list as the town with the highest numeric increase of people, estimated at 1,170 people 
  • While Bloomfield had the highest percent increase from 2016 to 2017, with a 3.9% increase. 

The following table lists the top 15 towns ...

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