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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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  • Kaiser Health Tracking Poll – June 2009

    Poll Finding

    The June Kaiser Health Tracking Poll finds remarkable stability in public opinion on health reform as Congressional committees begin to hone in on the details of their health reform bills and debate intensifies. A solid majority of the American people continue to believe that health reform is more important than ever given the country’s economic problems. A solid majority of the American people continue to believe that health reform is more important than ever given…

  • Understanding The Medicaid And CHIP Maintenance of Eligibility Requirements

    Fact Sheet

    This fact sheet examines the provisions in the Patient Protection and Affordable Care Act (ACA) that require states to maintain eligibility and enrollment standards for Medicaid and the Children's Health Insurance Program. These maintenance of eligibility (MOE) provisions were designed to keep Medicaid and CHIP coverage stable until coverage expands under the health reform law. Under the MOE provisions, to receive federal Medicaid funds, states cannot impose eligibility and enrollment policies that are more restrictive…

  • Pulling it Together: How the ACA Can Help The Homeless

    From Drew Altman

    Estimates are that there are approximately 630,000 people who are homeless on any given night in the U.S. -- about two-thirds in shelters and one-third on the street or without real shelter. Several million people are estimated to experience homelessness over the course of a year. About two-thirds are individuals and the balance are in families. These numbers are virtually identical to national estimates we used when I worked intensively on the issue of homelessness in the…

  • Pulling it Together from Drew Altman: Multiple Agendas for Controlling Health Care Costs

    Perspective

    In what would be a domestic policy trifecta, we may be headed for interconnected big debates about economic recovery, entitlement programs and health reform. A core issue in the entitlement and health reform debates is the problem of rising health care costs. President Obama, now apparently fully briefed on the economic, budget and health reform realities he faces, is talking conspicuously about hard choices that may lie ahead. In a short period of time the…

  • Pulling It Together: Implementation Is Forever

    Perspective

    Now that historic health reform legislation is law, everyone is rightfully focused on implementation. There are two very different ways to look at implementation. One is the more legalistic worm's eye view, which sees implementation largely as the process of putting into effect what was written in the law. In the worm's eye view implementation proceeds in a linear fashion from legislation, to regulations specifying what the statute calls for in greater detail, to operations…

  • Mental Health Financing in the United States: A Primer

    Report

    This primer provides an overview of behavioral health care, reviews the sources of financing for such care, assesses the interaction between different payers, and highlights recent policy debates in mental health. It also discusses the role of Medicaid, currently the largest source of financing for behavioral health services in the nation, covering a quarter of all expenditures. This comprehensive resource serves as a guide for those who want to understand the complex system of behavioral…

  • Uninsured Workers in America

    Fact Sheet

    The fact sheet describes the characteristics of uninsured workers, the availability of and participation in job-based coverage, and reasons why workers are uninsured. Fact Sheet (.pdf)

  • 2003 Health Insurance Survey

    Poll Finding

    The 2003 Kaiser Family Foundation Health Insurance Survey examines the public's level of satisfaction with their insurance coverage, their expectations of health insurance, the role of costs and other factors in health insurance decision-making, and attitudes toward employer-sponsored coverage. It also explores people's opinions about several alternative health insurance plans that are currently under consideration and explores how they might respond to these new options. Summary and Chartpack Toplines

  • Ten Myths about the Uninsured

    Fact Sheet

    Lack of health insurance coverage among millions of Americans remains one of this nation’s most pressing social challenges, but one that is often not well understood. Common knowledge about who the uninsured are, why they are uninsured, the difference health coverage makes, as well as the impact on all our lives of having a large uninsured population — is riddled with misconceptions and myths. Basic facts about the uninsured, outlined here under the most common…