The American Community Survey (ACS) 1-Year Estimates for 2025 have been released today, October 29, 2026. These estimates are the first ACS data release following the Census Bureau's implementation of a new disclosure avoidance policy that stands to impact data granularity, data privacy, or both.
Read MoreIn our latest Data for Democracy webinar, CTData discussed proposed federal changes to the 2030 Census and their potential impact on Connecticut. These proposals include removing race and ethnicity questions, changing how residency is determined, and excluding certain non-citizens from congressional apportionment counts.
Comments are due by November 2nd and can be submitted by individuals representing themselves, as well as organizations. Please consider commenting for yourself and your institution if you have concerns about this rule.
Read MoreThe administration has proposed changes that will decrease the quality of data available for decision-making in Connecticut until at least 2040. If you ever use census data, including ACS, please consider taking action by November 2. Learn more about what is proposed and why it matters during this webinar.
Read MoreOn June 25, 2026, a pending rule from the Office of Management and Budget (OMB), an Executive Office (meaning the Office sits in the Executive branch under the President) was posted titled "Decennial Census of the Population of Americans; Proposed Residence Criteria and Proposed Regulations for Demographic Questions." The rule has not been published but census watchers have pieced together what it may mean.
Read MoreIf you use the American Community Survey (ACS) to write a grant, report to a funder or your stakeholders, or conduct planning, there are changes coming that may impact the availability of the data you have grown accustomed to accessing. According to a June 4 rule published by the Office of Privacy and Open Government at the Commerce Department, key statistical products from the Department will be returning to out-of-date statistical methods to protect privacy, which is likely to result in much less data being available for the public to utilize.
As a data user in Connecticut, here's what we know and what you can look out for with upcoming data releases.
Read MoreOn May 7, 2026, CTData hosted our annual Hartford Youth Data Spotlight, showcasing youth-led research projects that demonstrated how young people can use data to better understand and address issues facing their communities. This year's event highlighted the work of two groups of young researchers who partnered with CTData throughout the past year.
Read MoreIn March, the Census Bureau released its Vintage 2025 County Population Estimates – which, in Connecticut, are for our nine “county-equivalent” planning regions. The data include annual total population estimates for states and counties or county-equivalents for July 1, 2020, to July 1, 2025, as well as estimated “components of change” – births, deaths, and migration – between each year.
Read on to learn about how Connecticut’s population has changed, overall and by planning region.
Read MoreWhat does it take to share data responsibly across institutions and state systems? In this conference panel, leaders from government, academia, and national data intermediaries discuss real-world approaches to data governance, trust-building, and scalable data sharing across education and workforce systems.
Read MoreApril 1 marks Census Day, a once-in-a-decade event with significant financial implications for Connecticut. While the decennial census is often seen as a simple population count, it plays an important role in determining how federal funding is allocated. For Connecticut, that translates to billions of dollars each year that support health care, education, housing, and other essential services. Read more.
Read MoreOn Thursday, March 12, the Hartford Youth Data Fellows welcomed a team from Hartford Votes-Vota Coalition for an engaging and informative session focused on civic participation in Hartford. The visit brought together 10 current fellows along with 3 alumni who are continuing their work as youth researchers studying access to sports and recreation across the city.
Read MoreDr. Whitney Battle-Baptiste explored W.E.B. Du Bois’s groundbreaking data visualizations from the 1900 Paris Exposition and what they teach us about equity, data storytelling, and designing data with people at the center.
Read MoreThe federal data system has undergone significant changes this past year, impacting everything from national policy to specific issue areas.
But how can Connecticut advocates track these shifts and ensure the data we rely on remains accurate and accessible?
Read MoreIn September, 2025, we conducted an analysis of data from the Deportation Data Project to get a picture of Immigration and Customs Enforcement (ICE) activity in Connecticut. Using this same dataset, we analyzed the currently available data, which now goes to October 2025. In this post, we take a fresh look at ICE apprehensions in Connecticut and compare Connecticut to other New England states.
A quick note about the data: The Deportation Data Project dataset includes ICE arrests and related activity in Connecticut through October 2025. More about this dataset and how we used it can be found at the end of this post.
Read MoreConnecticut consistently issues new housing permits at a much lower rate than the nation as a whole. From 2020 to 2024, the national rate of new permits has been roughly three to four times higher than Connecticut’s. Read more.
Read MoreIn our recent Community of Practice session, we focused on something many of you have asked for: frameworks for thinking about equity in data. This conversation introduced several high-level frameworks that help us ask better questions about power, accountability, and community impact in our data work. Read more.
Read MoreThe Hartford Neighborhood Data Platform (HNDP) is a data exploration tool developed by CTData Collaborative to empower city and community organizations, policymakers, and residents with access to neighborhood-level data.
Read MoreIn Connecticut there are 480,258 households who rent their homes. Based on household income, as many as 367,252 households may qualify for a rental subsidy. Meaning more than 75% of rental households may qualify for a rental subsidy if there was enough subsidy available.
Read MoreFair Rent Commission (FRCs) requirements were expanded during Connecticut’s 2025, special legislative session, by lowering the population threshold for requiring FRCs. This change now requires an additional 33 municipalities to establish a Fair Rent Commission (FRC). Read more here.
Read MoreFrom the 2021 to 2025 municipal election, voter turnout increased from 32% to 36% statewide. This represents almost 85,000 additional voters in the most recent election. Of the 158 towns that had a municipal election in both 2021 and 2025, almost three in four saw a higher turnout in 2025. In this blog post, we explore differences in voter turnout by town.
Read MoreThis year, there have been significant proposed federal funding cuts to Medicaid and other assistance programs. Recent policy shifts are reshaping access to health care, nutrition supports and other services. Young children (ages 0 to 3), one of the most vulnerable populations, will be affected by these changes.
To better understand the landscape of Medicaid in Connecticut for young children, we analyzed several key measures from the Connecticut Department of Social Services Medicaid data, such as enrollment and developmental screenings, along with participation in other services such as the Supplemental Nutrition Assistance Program (SNAP) and the Special Supplemental Nutrition Program for Women, Infants, and Children program (WIC).
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