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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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  • Women’s Health Quiz: Health Coverage and the Affordable Care Act

    Feature

    Health insurance coverage is a critical factor in making health care accessible to women—women with health coverage are more likely to obtain needed preventive, primary, and specialty care services. Test your knowledge of women’s health coverage and the effect of the Affordable Care Act on women with our ten-question quiz.

  • Key Lessons from Medicaid and CHIP for Outreach and Enrollment Under the Affordable Care Act

    Issue Brief

    The Affordable Care Act (ACA) will significantly increase coverage options through an expansion of Medicaid and the creation of new health insurance exchange marketplaces. However, effective outreach and enrollment efforts will be key to ensuring that new coverage opportunities translate into increased coverage. Based on a review of existing research, this brief identifies five key lessons learned through previous Medicaid and CHIP experience to help inform outreach and enrollment under the ACA. The brief is…

  • Quality of Care in Community Health Centers and Factors Associated with Performance

    Issue Brief

    This study examines quality among health centers relative to Medicaid managed care organizations (MCOs). Chronic care quality among health centers is high; gaps in women’s preventive care are a concern. Lower-performing health centers have very high uninsured and homeless rates. The expansion of Medicaid and private insurance under the ACA may foster gains in health center quality performance.

  • Wisconsin’s BadgerCare Program and the ACA

    Fact Sheet

    This fact sheet provides an overview of changes to BadgerCare, Wisconsin's 1115 waiver demonstration project, and how it relates to the Affordable Care Act's Medicaid expansion.

  • How Have State Medicaid Expansion Decisions Affected the Experiences of Low-Income Adults? Perspectives from Ohio, Arkansas, and Missouri

    Issue Brief

    This brief examines the experiences of low-income adults in three states that have made varied Medicaid expansion decisions: Ohio, which adopted the ACA Medicaid expansion, Arkansas which implemented the Medicaid expansion through a “Private Option” waiver, and Missouri, which has not adopted the expansion. While Arkansas and Ohio implemented the expansion in different ways, participants in both states described how obtaining coverage improved their ability to access care, contributing to improvements in their ability to…

  • Year Two of the ACA Coverage Expansions: On-the-Ground Experiences from Five States

    Issue Brief

    This brief provides an on-the-ground view of ACA implementation after completion of the second open enrollment period. It is based on 40 in-person interviews conducted in five states that have made different implementation choices, including three states (Colorado, Kentucky, and Washington) that have developed a State-based Marketplace and adopted the Medicaid expansion and two states (Utah and Virginia) that rely on the Federally-facilitated Marketplace (FFM) for enrollment of individuals into qualified health plans (QHPs) and…

  • Visualizing Health Policy: Health Care Coverage and Access for Men, 2013-2015

    News Release

    This Visualizing Health Policy infographic provides a snapshot of men’s health care and insurance coverage issues, including health status, access to care and use of services. It compares the uninsured rates of men and women, their cost barriers to care, their connection to clinicians, and their use of prescription drugs, screening, and counseling services. Fewer men than women gained coverage between October 2013 and March 2015, and the uninsured rate continues to be higher for…