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Uninsured

Data and analysis

The coverage gap exists because some states did not expand Medicaid under the ACA to cover adults under age 65 without dependent children with incomes at/below 138% of the federal poverty level (FPL)

How Many Uninsured Are in the Coverage Gap?

An estimated 1.4 million uninsured individuals in the 10 states without Medicaid expansion, including many working adults, people of color, and those with disabilities, remain in the "coverage gap," ineligible for Medicaid or for ACA tax credits that would make coverage affordable.

The Uninsured and Health Coverage

This Health Policy 101 chapter examines the share of the United States population who are uninsured, highlighting their demographics and the challenges they face because of the lack of coverage.

Key Facts on Health Coverage of Immigrants

This fact sheet provides an overview of health coverage for immigrants based on data from the 2023 KFF/LA Times Survey of Immigrants. As of 2023, half of likely undocumented immigrant adults and one in five lawfully present immigrant adults reported being uninsured.

New and noteworthy

Affordability Is the Issue Now, But Look for the Uninsured to Make a Comeback

A new column on the uninsured from President and CEO Dr. Drew Altman explains: “The uninsured is not the most politically salient problem in health care now, that’s affordability, nor is it the non-problem some say it is. But it’s coming back. And the problem of the chronically ill uninsured is glaring.” Read more.

Key Facts about the Uninsured Population

The number and share of people without insurance grew in 2024, increasing for the first time since 2019, according to KFF’s analysis of data from the American Community Survey (ACS). This issue brief describes trends in health coverage in 2024, examines the characteristics of the uninsured population , and summarizes the access and financial implications of not having coverage.

More on the uninsured population >>

Who was uninsured in 2024?

Latest Polling
9.8%

The share of people under age 65 without insurance
62%

The share of uninsured adults who said they were uninsured because coverage is not affordable
59%

The share of uninsured adults who said they or someone living with them had problems paying for health care
39%

The share of uninsured adults who reported delaying or not getting needed care or medication due to cost
Other key facts about the uninsured >>

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  • A Court Ruling Striking Down the ACA Would Eliminate the Medicaid Expansion and Cause Millions of Low-Income People to Become Uninsured

    News Release

    Millions of low-income Americans currently covered by Medicaid likely would become uninsured if the Supreme Court were to strike down the Affordable Care Act in California v. Texas, a legal challenge the high court is scheduled to hear in early November, KFF experts explain in a new Policy Watch post. Overturning the ACA would eliminate the expansion of Medicaid, which largely has been financed by the federal government, and eliminate eligibility for Medicaid for low-income…

  • How Many Uninsured Adults Could Be Reached If All States Expanded Medicaid?

    Issue Brief

    As more people lose their jobs and accompanying ESI, more may fall into the coverage gap, particularly starting in 2021 after unemployment benefits expire for many who have lost their jobs and incomes are likely to drop below the minimum threshold for marketplace subsidies. This analysis estimates how many uninsured adults—including those uninsured even before the pandemic and those who could become uninsured as a result of it— could become eligible for Medicaid if states…

  • 4.7 Million Uninsured Adults Could Become Eligible for Medicaid by 2021 if All Remaining States Expanded the Program under the ACA

    News Release

    About 4.7 million uninsured adults could gain eligibility for Medicaid by 2021 if the 14 remaining non-expansion states were to expand Medicaid under the Affordable Care Act, a new KFF analysis finds. That figure includes an estimated 2.8 million adults who already were uninsured prior to the coronavirus pandemic and would fall in the “coverage gap” – meaning they have incomes too high to qualify for Medicaid but too low for ACA marketplace subsidies –…

  • Women’s Access to Care, by Insurance Coverage

    Feature

    Women’s Access to Care by Insurance Coverage, 2010 Download Source National Center for Health Statistics, National Health Interview Survey in Health, United States 2012.  The Commonwealth Fund Biennial Health Insurance Survey, 2010

  • Women at Greatest Risk for Being Uninsured in 2012

    Feature

    Women at Greatest Risk for Being Uninsured, 2012 Download Source Kaiser Family Foundation and Urban Institute analysis of the March 2013 Current Population Survey, U.S. Bureau of the Census.   

  • Share of Women Age 18-44 Who Are Uninsured, by State, 2011-2013

    Feature

    Share of Women Age 18-44 Who Are Uninsured, 18-44, by State Download Source State-level figures based on Urban Institute and Kaiser Family Foundation estimates of pooled 2012 and 2013 Current Population Surveys, U.S. Bureau of the Census.

  • Healthy Indiana Plan and the Affordable Care Act

    Fact Sheet

    This fact sheet provides an overview of the Healthy Indiana Plan, Indiana's 1115 waiver demonstration project, and how it relates to the Affordable Care Act's Medicaid expansion.

  • Kaiser Health Tracking Poll: November 2013

    Feature

    Amid heavy news coverage of problems with the Affordable Care Act's rollout, the November Kaiser Health Tracking Poll finds a significant negative shift in the public's views of the law, with roughly half now holding an unfavorable view and just a third holding a positive one.