Connecticut: Medicaid expansion enrollment up 22% since COVID hit; total Medicaid up 15%


I've once again relaunched my project from last fall to track Medicaid enrollment (both standard and expansion alike) on a monthly basis for every state dating back to the ACA being signed into law.

For the various enrollment data, I'm using data from's Medicaid Enrollment Data Collected Through MBES reports. Unfortunately, they've only published enrollment data through December 2020. In some states I've been able to get more recent enrollment data from state websites and other sources.

Today I'm presenting Connecticut. For enrollment data from January 2021 on, I'm relying on adjusted estimates based on raw data from the Connecticut Dept. of Social Services.

Connecticut total Medicaid enrollment (including ACA expansion) hovered between 900K - 1.0 million prior to the COVID pandemic hiatting last February/March.

Since COVID hit, however, non-ACA Medicaid enrollment has jumped 12.6%, while ACA expansion enrollment is up 21.9%. This brings total enrollment up by around 15.2% from pre-COVID levels.

Connecticut has 3,605,944 residents. As of April 2021:

  • around 1.1 million are enrolled in Medicaid overall, or 30.5% of the population
  • around 772,000 are enrolled in non-ACA Medicaid
  • around 328,000 are enrolled in ACA Medicaid expansion.
  • Add in the ~74,000 subsidized ACA exchange enrollees and that's around 402,000 Connecticut residents who would lose healthcare coverage if the Supreme Court strikes down the Affordable Care Act, or 11.1% of the state population.