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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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  • What Issues Will Uninsured People Face with Testing and Treatment for COVID-19?

    Fact Sheet

    With COVID-19 cases rising in the US, issues surrounding access to testing and treatment for uninsured individuals have taken on heightened importance. Efforts to limit the spread of the coronavirus in the United States are dependent on people who may have been exposed to the virus or who are sick getting tested and seeking medical treatment. However, the uninsured are likely to face significant barriers to testing for COVID-19 and any care they may need…

  • Uninsured Most Likely to Delay or Go Without Care or Prescription Drugs Due to Cost

    Feature

    Many uninsured people do not obtain the treatments their health care providers recommend for them because of the cost of care. In 2018, uninsured nonelderly adults were more than three times as likely as adults with private coverage to say that they postponed or did not get a needed prescription drug due to cost.

  • Addressing Health and Social Needs of California’s Immigrant Families: Lessons Learned from Local Responses and Future Priorities

    Event Date:
    Event

    A flurry of federal activity on immigration rules and policies is affecting health care and coverage for both lawfully residing immigrants and undocumented immigrants in the country, ranging from deportation policies, a revised “public charge” rule, and a new proclamation from President Trump requiring health insurance for entry via immigrant visas. California has the largest share of immigrants among its population, and has been at the forefront of current policy debates, including moving forward on…

  • Cost Concerns and Coverage Changes: A Follow-Up Survey of ACA Marketplace Enrollees

    Poll Finding

    This KFF survey is a follow-up survey of adults who had ACA Marketplace insurance in 2025. The survey examines the cost concerns and coverage changes that these 2025 Marketplace enrollees are experiencing following the expiration of the enhanced premium tax credits. The survey finds that half of returning enrollees say their health care costs are “a lot higher” and most expect to cut back on basic household expenses to afford coverage.

  • With or Without ACA Repeal, ACA and Medicaid Cuts are Looming

    Perspective

    In this JAMA Health Forum post, Executive Vice President Larry Levitt explores why the incoming Trump administration and Republican majorities in Congress are likely to pursue budget cuts in Medicaid and the Affordable Care Act and why such efforts are likely to boost the number of uninsured Americans.

  • Health Care and Medicaid — Weathering the Recession

    Report

    Rising unemployment is leaving millions more Americans without health insurance, creating challenges for those seeking to stabilize coverage and shore up the nation’s health safety net. In this Perspective article, published March 26 in the New England Journal of Medicine, Diane Rowland, executive vice president of the Kaiser Family Foundation and executive director of the Kaiser Commission on Medicaid and the Uninsured, examines the ongoing recession’s impact on health coverage and state Medicaid programs, which…

  • Chartpack: Kaiser Health Tracking Poll — April 2009

    Poll Finding

    This document contains the chartpack from the April Health Tracking Poll. The survey was designed and analyzed by public opinion researchers at the Kaiser Family Foundation and was conducted April 2 through April 8, 2009, among a nationally representative random sample of 1,203 adults ages 18 and older. Telephone interviews conducted by landline (902) and cell phone (301, including 98 who had no landline telephone) were carried out in English and Spanish. The margin of…

  • Explaining Health Care Reform: What Is An Employer “Pay-or-Play” Requirement?

    Issue Brief

    To broaden coverage, some health reform proposals would require employers to offer coverage or pay to help finance subsidies for those without access to affordable coverage. These types of reforms are often referred to as “pay-or-play” policies. The brief explains the concept and policy implications of employer pay-or-play proposals, which can vary in terms of the level of coverage required for compliance, the cost of the penalty to employers who do not offer, and whether…

  • Health Reform Roundtables: Charting A Course Forward

    Report

    Health Reform Roundtables: Charting A Course Forward is a series of discussions among federal officials, state officials and outside experts that provides an opportunity to share insights and explore key issues related to implementing a significant expansion of the Medicaid program as part of the new health reform law that will require most U.S. citizens and legal residents to obtain health coverage. States will be largely responsible for implementing the Medicaid expansion, which will provide…