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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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  • Briefing: Medicaid and CHIP Eligibility and Enrollment in 2016, and a Look Ahead: Findings from a 50-State Survey

    Event Date:
    Event

    At 9:30 a.m. ET on Thursday, January 21, the Kaiser Family Foundation hosted a public briefing to present findings from our 14th annual 50-state survey of Medicaid and CHIP eligibility, enrollment, renewal, and cost-sharing policies. The survey, conducted by the Foundation’s Kaiser Commission on Medicaid and the Uninsured (KCMU) and Georgetown University’s Center for Children and Families, provides new data on states’ Medicaid eligibility and enrollment policies, which have undergone significant change in the two…

  • A Guide to Understanding Medicaid Expansion Waivers as States Debate What to Do Under the ACA

    News Release

    With the recent governors’ elections in Kentucky and Louisiana refocusing attention on state Medicaid expansion decisions, a newly updated issue brief from the Kaiser Family Foundation provides an overview of the waivers obtained by six states – Arkansas, Iowa, Michigan, Indiana, New Hampshire and Montana -- that are pursuing alternative Medicaid expansions under the Affordable Care Act.

  • Behind the Challenges to Universal Health Coverage

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman discusses why political reality and the diverse makeup of the remaining uninsured population mean that the likeliest path to universal coverage is a multi-step approach.

  • Medicare-for-All vs. Single Payer: The Impact of Labels

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, “Medicare-for-All vs. Single Payer: The Impact of Labels”, Drew Altman uses new polling on a Medicare-for-all or single payer health system to explain how what you call a health reform plan can substantially affect the public’s response. All previous Drew Altman columns are online.

  • Medicaid Expansion Waivers: What Will We Learn?

    Issue Brief

    Section 1115 waivers authorize research and demonstration projects that, in the view of the Health and Human Services (HHS) Secretary, further the purposes of the Medicaid program. The ACA implemented new requirements for these waivers, including that states must have a publicly available, approved evaluation strategy. This brief examines some of the major research questions and hypotheses relevant to the federal and state evaluations of Medicaid expansion Section 1115 waivers and explores key challenges that…

  • The Affordable Care Act After Six Years

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman examines the role of the Affordable Care Act in the health system on its sixth anniversary, and how the hot debate about the law may have created an exaggerated impression of the good and the bad it can do.