Home Uninsured Topics

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 >>

Latest News

More KFF Health News

Stay informed.

Get KFF's latest on the Uninsured

Stay informed.

Get KFF's latest on the Uninsured

View the Latest: Uninsured

Filter

List Grid

301 - 310 of 1,310 Results

  • Small Area Variations and the ACA’s Coverage Expansions

    From Drew Altman

    A new Kaiser analysis sheds light on how the country might react to the Affordable Care Act (ACA) when it is implemented.  It looks at how the benefits of the ACA's coverage expansions will vary around the country by census areas (technically, Public Use Microdata Areas, or PUMAs).  PUMAs are artificial areas of about 100,000 people each created by the Census Bureau to provide more detailed demographic, social and economic information at the local level.  They…

  • A Guide to the Supreme Court’s Decision on the ACA’s Medicaid Expansion

    Issue Brief

    On June 28, 2012, the U.S. Supreme Court issued its decision in the case challenging the Affordable Care Act (ACA). The Court upheld the constitutionality of the ACA's individual mandate, which requires most people to maintain a minimum level of health insurance coverage beginning in 2014. A majority of the Court also found the ACA's Medicaid expansion unconstitutionally coercive of states, while a different majority of the Court held that this issue was fully remedied…

  • Side-by-Side Comparison of Major Health Care Reform Proposals

    Issue Brief

    On March 23, 2010, President Obama signed into law the Patient Protection and Affordable Care Act, and a week later, signed into law the Health Care and Education Reconciliation Act of 2010, which made some changes to the comprehensive health reform law. Summary of Final Health Care Reform Law (.pdf) Download a printable comparison of the new health reform law (the Patient Protection and Affordable Care Act), the House-passed Health Care and Education Reconciliation Act…

  • About 5 Million Uninsured People Could Get ACA Marketplace Coverage Without a Monthly Premium – But They Would Have to Enroll Soon

    News Release

    About 5 million uninsured people across the country could get coverage through an Affordable Care Act Marketplace health plan with virtually no monthly premium if they enroll soon, a new KFF analysis finds. In most states, open enrollment runs through January 15, with tax credits available to help eligible low- and middle-income people afford coverage. Those tax credits would offset the full monthly premium for the lowest cost plan or plans for millions of uninsured…

  • Do State Decisions to Prioritize Renewals for Medicaid Enrollees Who are Likely Ineligible Affect Early Disenrollment Rates?

    Policy Watch

    Some states are prioritizing Medicaid renewals for enrollees flagged as likely to be ineligible. Early data from Arizona, Idaho, and Pennsylvania show disenrollment rates for flagged enrollees are higher than for other enrollees. This analysis considers why different state approaches to renewals may explain some – but not all – variation in disenrollment rates across the U.S.

  • 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.

  • 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…

  • Health Insurance Coverage in America, 2010

    Report

    Over 49 million people in the United States had no health insurance coverage in 2010—more than one in every six (18.5%) of the population under age 65. Having a clear picture of who the uninsured are is fundamental to addressing this nation-wide problem. This slideshow provides figures and tables on the uninsured and health insurance coverage for the following subpopulations: nonelderly, children, nonelderly adults and working adults. Figures are provided for important social, economic, and…

  • Pulling it Together: The Experts vs. The Public on Health Reform

    Perspective

    In repeated Kaiser polls, we see a divide between what experts believe and what the public believes about some of the key issues in health reform. They don’t disagree on everything; far from it. But there is a wide gulf on basic beliefs about what is behind the problems in the health care system and key elements of reform, especially delivery reform. Experts believe the health care system is full of unnecessary care and troubling…

  • Pulling It Together: The Message from Massachusetts

    Perspective

    The Massachusetts special election has roiled the political world and profoundly affected the prospects for health reform just when it looked like passage was a lock.  Efforts are underway to put health reform legislation back together again on Capitol Hill, but not since powerful Ways and Means Chair Wilbur Mills fell into the Tidal Basin with Fanne Foxe in 1974, halting momentum on a deal on health reform that seemed ready to happen, has something this unexpected so affected…