Note: Expansion states are those that expanded Medicaid by January 1, 2021.There were 14 states that had not yet expanded Medicaid as of this date. Oklahoma and Missouri are considered non-expansion states for this analysis as they implemented Medicaid in mid-to-late 2021.
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Health insurance status of Americans by Medicaid expansion status 2013-2021
In 2021, ** percent of Americans in Medicaid non-expansion states were uninsured, this was twice the share of uninsured people in Medicaid expansion states. Individual-market health insurance coverage was higher among Americans in non-expansion states. In general, health insurance coverage was higher among Americans residing in Medicaid expansion states compared to non-expansion states between 2013 and 2021.
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Commonwealth Fund. (March 16, 2023). Distribution of health insurance status of U.S. adults aged 18-64 years from 2013 to 2021, by state Medicaid expansion status [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 04, 2026, from /statistics/1413723/health-insurance-coverage-of-adults-in-us-by-medicaid-expansion-status/
Commonwealth Fund. "Distribution of health insurance status of U.S. adults aged 18-64 years from 2013 to 2021, by state Medicaid expansion status." Chart. March 16, 2023. ÌÇÐÄÆƽâ°æ. Accessed August 04, 2026. /statistics/1413723/health-insurance-coverage-of-adults-in-us-by-medicaid-expansion-status/
Commonwealth Fund. (2023). Distribution of health insurance status of U.S. adults aged 18-64 years from 2013 to 2021, by state Medicaid expansion status. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 04, 2026. /statistics/1413723/health-insurance-coverage-of-adults-in-us-by-medicaid-expansion-status/
Commonwealth Fund. "Distribution of Health Insurance Status of U.S. Adults Aged 18-64 Years from 2013 to 2021, by State Medicaid Expansion Status." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Mar 2023, /statistics/1413723/health-insurance-coverage-of-adults-in-us-by-medicaid-expansion-status/
Commonwealth Fund, Distribution of health insurance status of U.S. adults aged 18-64 years from 2013 to 2021, by state Medicaid expansion status ÌÇÐÄÆƽâ°æ, /statistics/1413723/health-insurance-coverage-of-adults-in-us-by-medicaid-expansion-status/ (last visited August 04, 2026)
Distribution of health insurance status of U.S. adults aged 18-64 years from 2013 to 2021, by state Medicaid expansion status [Graph], Commonwealth Fund, March 16, 2023. [Online]. Available: /statistics/1413723/health-insurance-coverage-of-adults-in-us-by-medicaid-expansion-status/
