Medicaid, together with CHIP and AllKids, provides services to some 3.2 million people.

Nearly a million Illinois residents have gained health insurance since the ACA opened for business in October 2013 – the vast majority of them through the expanded Medicaid program.

Illinois Medicaid


More than 622,000 people had signed up for adult Medicaid under the ACA as of August 2014.

  • Medicaid Signups • Map

ACA Expansion

Illinois’ Medicaid expansion has been responsible for the largest share of the decline in uninsurance since ACA enactment. Medicaid covered 1.3 million working-age residents (17.5%) in 2016, up from 864,000 in 2012 (13.2%), a 49% increase.

  • Working Age Members – Change 2012 to 2016 • Map
  • Medicaid and Work – Change 2011 to 2016 • Charts
  • Residents Eligible for Expansion 2011 • MapCharts
Data Topics

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