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New and noteworthy

2025 KFF Marketplace Enrollees Survey

If the amount they pay in premiums doubled, about one in four enrollees in ACA Marketplace health plans say they would “very likely” go without insurance in 2026, finds a KFF survey of Marketplace enrollees fielded shortly after open enrollment began in the first weeks of November 2025. One in three say they would be “very likely” to look for a lower-premium Marketplace plan.

Health Coverage Among Community Health Center Patients, 2019-2024

Community Health Center Patients, Financing, and Services

Changes to Medicaid and the ACA Marketplace included in the 2025 reconciliation law and the expiration of ACA Marketplace enhanced premium tax credits at the end of 2025 are likely to increase the number of uninsured patients and patients who cannot afford out-of-pocket costs, placing new financial burdens on community health centers.

Data and analysis

The Uninsured Population 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.

How Many Uninsured Are in the Coverage Gap?

This analysis estimates that 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 tax credits that would make coverage ACA's Marketplaces affordable to them.

Key Facts about the Uninsured Population

The number of people ages 0-64 who were uninsured held steady at 25.3 million in 2023, although the number of uninsured children rose from 3.8 million to 4.0 million. Most uninsured people are in low-income families and have at least one worker in the family.

How the Unwinding Affected Enrollees

Over half who were disenrolled say they put off needed medical care while trying to renew Medicaid. Overall, 19% of adults who had Medicaid prior to the start of unwinding say they were disenrolled at some point in the past year. Of this group, a large majority (70%) were left at least temporarily uninsured.

The uninsured: How costs affect care and health, 2023

Latest Polling
8%

Percent of adults who reported not having health insurance
55%

Percent of uninsured adults who reported delaying or forgoing some form of health care due to cost
19%

Percent of uninsured adults who report that they or a family member had difficulty paying medical bills
38%

Percent of uninsured adults who reported not having a usual source of care (vs. 8% of insured adults)
Peterson-KFF Health System Tracker

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  • Access To Health Care:

    Report

    Promises and Prospects For Low-Income Americans This book explores critical issues affecting access to health care for low-income Americans by assessing the importance of expansions of health coverage for the poor, the emerging challenges providers who serve low-income and uninsured populations face in a rapidly evolving health care delivery system, and the effects of these…

  • Lack of Coverage: A Long-Term Problem for Most Uninsured

    Fact Sheet

    This fact sheet, recently updated with 2002 data, describes how long the uninsured remain without coverage, who tends to go without insurance for long spells of time, and what difference time without coverage makes in terms of access to and utilization of care. Fact Sheet (.

  • Is Lack of Coverage a Short- or Long-Term Condition?

    Issue Brief

    This paper produces alternative estimates of the numbers of uninsured and explores the distribution of the duration of uninsured spells for people who lacked coverage at some time during a 12-month period.

  • The Uninsured & Access to Health Care

    Fact Sheet

    The Uninsured and Their Access to Health Care Drawing on data from the updated Uninsured in America: A Chart Book (May 2000), this fact sheet outlines the problem of the uninsured in America, providing data on the growing number of uninsured Americans and a profile of the uninsured population.

  • Health Coverage and Care in the South in 2014 and Beyond

    Issue Brief

    This issue brief provides an overview of health coverage and care in the South today, with a focus on demographics, the impact of the ACA coverage expansions, and ongoing efforts to improve the delivery system and safety net in the South.

  • Health Coverage and Care in the South: A Chartbook

    Report

    The South has faced longstanding disparities in health and health care, although significant variation exists between southern states. As a group, compared to those in other regions, Southerners are more likely to be uninsured, less likely to have access to needed health services, and more likely to experience a number of chronic health conditions. This chartbook provides key data on the demographic and economic characteristics of the southern population as well as their health status, health insurance coverage, and access to care today.

  • California’s Previously Uninsured After The ACA’s Second Open Enrollment Period

    Report

    The Kaiser Family Foundation California Longitudinal Panel Survey is a series of surveys that, over time, tracks the experiences and views of a representative, randomly selected sample of Californians who were uninsured prior to the major coverage expansions under the Affordable Care Act (ACA). The initial baseline survey was conducted with a representative sample of 2,001 nonelderly uninsured Californian adults in summer 2013, prior to the ACA’s initial open enrollment period. The second survey in the series followed up with the same group of previously uninsured Californians who participated in the baseline (a longitudinal panel survey). The third in the series, and the focus of this report, followed up with them again after the second open enrollment period in spring 2015 to find out whether more have gained coverage, lost coverage, or remained uninsured, what barriers to coverage remain, how those who now have insurance view their coverage, and to assess the impacts that gaining health insurance may have had on financial security and access to care.

  • 2015 Survey of Health Insurance Marketplace Assister Programs and Brokers

    Report

    This nationwide survey analysis of Marketplace consumer assistance programs and brokers examines the nature of Marketplace assistance during the second open enrollment period for 2015 coverage, and offers unique insights into how Affordable Care Act (ACA) implementation is progressing, what is changing, and what challenges remain. Building upon our Survey of Health Insurance Marketplace Assister Programs (2014), the analysis compares Assister Program capacity and experiences from the first open enrollment period to the next, and also includes the enrollment experience of brokers for the first time.