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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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  • CHIP TIPS: CHIP Financing Structure

    Issue Brief

    This brief, the fourth in a series, examines important changes to CHIP’s financing structure under the Children’s Health Insurance Program Reauthorization Act of 2009. The law includes a number of important programmatic and financing changes that affect both Medicaid and CHIP. Among the most important changes include significant new funding for the CHIP program, changes in the formula for distributing CHIP funds among states and a new option for states to decide whether to use…

  • How Will Uninsured Children Be Affected By Health Reform?

    Issue Brief

    This brief examines uninsured children and how they could be affected by health reform, including estimates of how many might qualify for coverage under a Medicaid expansion, how many would be eligible for subsidies and how many would not be eligible for such help. Issue Brief (.pdf)

  • Matching Health Benefit Packages to Health Needs: Key Issues To Consider In Health Reform

    Event Date:
    Event

    Three reports and a video collectively examine the range of health care needs and costs that people face today against the backdrop of the scope of health coverage that may be available to them under health reform. Children and Health Care Reform: Assuring Coverage That Meets Their Health Care Needs and Individuals With Special Needs and Health Reform: Adequacy of Health Insurance Coverage examine the needs of children and adults, respectively, focusing on those with…

  • CHIP TIPS: Children’s Oral Health Benefits

    Issue Brief

    This brief examines a new requirement under the Children's Health Insurance Program Reauthorization Act of 2009 that state CHIP programs cover comprehensive dental benefits. The reauthorization law also allows states with separate CHIP programs to offer a dental-only plan for children who have other health insurance but lack adequate dental benefits. Other oral health improvements in the law include education for new parents, better access to benefit and provider information and enhanced reporting on the…

  • Pulling It Together: Predicting the Future

    Perspective

    A fair amount of attention was given recently to projections made by the Chief Actuary of the Centers for Medicare and Medicaid Services (CMS) about the new health reform law, and how they compare to previous estimates by the Congressional Budget Office (CBO). No doubt the various projections will be grist for claims made in the upcoming political season, so it is important to be clear about the differences between the two estimates and to…

  • Covering the Uninsured:  Growing Need, Strained Resources

    Fact Sheet

    Covering the Uninsured: Growing Need, Strained Resources This summary of key findings provides an overview of studies examining trends in health coverage and federal spending on the health care safety net. Fact Sheet (.pdf)

  • Coping with Fragmented Payment in the Real World

    Event Date:
    Event

    The Alliance for Health Reform and The Commonwealth Fund sponsored this briefing which focused on three communities that have reformed and harmonized health care payments across payers to improve care: a New York health center that serves a low income population; a Colorado community that pools money from public and private sources to provide care for all patients; and the State of Maryland, which has been using an all payer hospital rate setting system for…

  • Oral Health and Medicare Beneficiaries: Coverage, Out-of-Pocket Spending, and Unmet Need

    Issue Brief

    This brief describes the oral health of Medicare beneficiaries, examines sources of dental coverage for the Medicare population, and examines the utilization of dental services, out-of-pocket spending on dental care, and access problems. This analysis uses data from the National Health and Nutrition Examination Survey (NHANES), the Medicare Current Beneficiary Survey Cost and Use file (MCBS), the National Health Interview Survey (NHIS) and the Kaiser Family Foundation Survey of Health Care Among Nonelderly People with…

  • Medicaid and SCHIP Eligibility for Immigrants

    Fact Sheet

    Immigrants in the U.S. face increasing challenges securing health care coverage. They have less access to employer-sponsored insurance than native citizens and face tighter restrictions on their eligibility for Medicaid and SCHIP, the nation’s major public health coverage programs for low-income children and families. This fact sheet provides an overview of the current rules on immigrants' eligibility for Medicaid and the State Children's Health Insurance Program. Fact Sheet (.pdf)

  • Useful Resources as the New U.S. Census Numbers on Health Coverage are Released

    Other Post

    With the U.S. Census Bureau releasing its annual update on health insurance coverage and the number of uninsured Americans shortly, Kaiser Family Foundation resources may be helpful. The Foundation and its largest program area, the Kaiser Commission on Medicaid and the Uninsured, produce several informational resources that analyze America's health insurance coverage, as well as the policy issues and public opinion regarding the uninsured. The Cost of Not Covering the Uninsured Project is an ongoing…