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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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  • How is the Affordable Care Act Leading to Changes in Medicaid Today? State Responses to Five New Options

    Issue Brief

    This policy brief examines how states in every region have responded to five key opportunities available under the health reform law to help them prepare for the significant expansion of Medicaid in 2014. The options covered in the brief include incentives for states to get an early start on the Medicaid coverage expansion; increased federal funding to upgrade Medicaid eligibility systems; money to improve care for beneficiaries with chronic conditions by providing "health home" services;…

  • 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…

  • The Role of Medicaid for Adults With Chronic Illnesses

    Fact Sheet

    This report and related fact sheets provide data on spending, utilization, and access to care among low-income nonelderly adult Medicaid beneficiaries with chronic illnesses. Four fact sheets provide detail for beneficiaries with diabetes, respiratory disease, cardiovascular disease, and behavioral health conditions The reports show that, despite relatively high prevalence of chronic conditions and, correspondingly, relatively high spending and utilization rates, Medicaid beneficiaries with chronic illness report better access to care than their uninsured counterparts, many…

  • Changes in Employees’ Health Insurance Coverage, 2001-2005

    Issue Brief

    This paper examines the underlying reasons behind the decline in employer coverage among employees from 2001 to 2005. The paper finds that almost half of the decline in employer-sponsored coverage was due to a loss of employer sponsorship. Another quarter of the decline was due to lost eligibility for benefits or losing access as a dependent of another employee. The remaining quarter of the decline was due to employees not participating in the offer of…

  • Giving Voice to the People of New Orleans: The Kaiser Post-Katrina Baseline Survey

    Poll Finding

    This house-to-house survey of people living in the New Orleans area examines the ongoing struggles of residents seeking to recover from the Hurricane Katrina disaster, including a detailed look at differences in views and experiences by race. Designed and analyzed by researchers at the Kaiser Family Foundation, the survey provides a portrait of the enormous needs of the population in order to inform recovery efforts and policy development on the Gulf Coast and in Washington.…

  • How Trends in the Health Care System Affect Low-Income Adults: Identifying Access Problems and Financial Burdens

    Issue Brief

    As policymakers focus on strategies to improve health insurance coverage, this brief highlights findings from the Kaiser Low-Income Coverage and Access Survey on the current role that insurance plays in facilitating access to care for low-income adults and in protecting against financial burdens. Findings demonstrate that health insurance is a critical lever to open the door to health care services for low-income adults. Uninsured low-income adults often experience health problems, but are more likely than…

  • Reports and Other Resources on Trends in Children’s Health Coverage

    Event Date:
    Event

    With Congress poised to reauthorize the State Children's Health Insurance Program (SCHIP) with a substantial increase in its federal funding, there are potentially new opportunities for reducing the estimated 9 million uninsured children nationwide. At the same time, the nation’s weak economy and growing unemployment is resulting in fewer families and children covered by employer-sponsored coverage. Against that backdrop, the Kaiser Family Foundation's Commission on Medicaid and the Uninsured (KCMU) released a package of new…