Figures from 2003 to 2005 were taken from previous reports from the same source and can be found
Notes: "Uninsured now" refers to adults who reported being uninsured at the time of the survey; "Insured now, had a gap" refers to adults who were insured at the time of survey but were uninsured at any point during the year before the survey field date; "Insured all year, underinsured" refers to adults who were insured for the full year up to and on the survey field date, but had such high out-of pocket costs or deductibles relative to their income that they were effectively underinsured.
Data: Commonwealth Fund Biennial Health Insurance Surveys (2003, 2005, 2010, 2012, 2014, 2016, 2018, 2020)
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Number of health uninsured vs insured adults in the U.S. 2003-2020
According to the survey, the number of currently uninsured adults dropped from 37 million in 2010 to 24 million in 2020. However, the number of those insured, but underinsured (those with such high out-of-pocket costs or deductibles relative to income that they were effectively underinsured) had increased from 29 million in 2010 to 41 million in 2020. This statistic displays the number of health insured vs. uninsured adults in millions in the United States from 2003 to 2020.
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Commonwealth Fund. (August 19, 2020). Number of health insured vs. uninsured adults in the United States from 2003 to 2020 (in millions) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 26, 2026, from /statistics/671672/development-of-uninsured-adults-in-us-by-number/
Commonwealth Fund. "Number of health insured vs. uninsured adults in the United States from 2003 to 2020 (in millions)." Chart. August 19, 2020. ÌÇÐÄÆÆ½â°æ. Accessed July 26, 2026. /statistics/671672/development-of-uninsured-adults-in-us-by-number/
Commonwealth Fund. (2020). Number of health insured vs. uninsured adults in the United States from 2003 to 2020 (in millions). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 26, 2026. /statistics/671672/development-of-uninsured-adults-in-us-by-number/
Commonwealth Fund. "Number of Health Insured Vs. Uninsured Adults in The United States from 2003 to 2020 (in Millions)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 19 Aug 2020, /statistics/671672/development-of-uninsured-adults-in-us-by-number/
Commonwealth Fund, Number of health insured vs. uninsured adults in the United States from 2003 to 2020 (in millions) ÌÇÐÄÆÆ½â°æ, /statistics/671672/development-of-uninsured-adults-in-us-by-number/ (last visited July 26, 2026)
Number of health insured vs. uninsured adults in the United States from 2003 to 2020 (in millions) [Graph], Commonwealth Fund, August 19, 2020. [Online]. Available: /statistics/671672/development-of-uninsured-adults-in-us-by-number/