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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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  • An Overview of Delivery System Reform Incentive Payment (DSRIP) Waivers

    Issue Brief

    This brief will examine similarities and difference across key elements of DSRIP waivers. The states included in this analysis are: California, Texas, Kansas, New Jersey, Massachusetts, and New York. The key elements of DSRIP initiatives that will be explored in this analysis include: the goals and objectives of the DSRIP initiative; eligible providers; projects and organization; allocation of funds; data collection and evaluation/reporting; and financing of DSRIP waivers.

  • A Perilous Gap In Health Insurance Literacy

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, A Perilous Gap In Health Insurance Literacy, Drew Altman discusses how progress in expanding coverage requires greater attention to the problem of health insurance literacy. All previous columns by Drew Altman are available online.

  • Summary of the Affordable Care Act

    Fact Sheet

    This document summarizes the comprehensive 2010 health reform law, often called the Affordable Care Act or ACA, including changes made to it by subsequent legislation, with a focus on provisions to expand coverage, control costs, and improve delivery systems.

  • Kaiser Health Tracking Poll: January 2014

    Feature

    With enrollment in new coverage options underway, a majority of the public believes that only “some” of the ACA’s provisions have been put into place, while just about one in five think “most” or “all” of the law has been implemented. Awareness of the law’s individual mandate and health insurance exchanges has increased slightly since last year, but about four in ten of the public overall and half the uninsured remain unaware of other major provisions. For the third month in a row, overall views of the law remain at their post-rollout more negative levels (50 percent unfavorable, 34 percent favorable), though over half the public – including three in ten of those who view the law unfavorably – say opponents should work on improving the law rather than keeping up efforts to repeal it.

  • How Will the Uninsured in Wyoming Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Wyoming, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Wyoming are eligible for Medicaid or financial assistance in the Marketplace. For states not expanding Medicaid, the report quantifies how many uninsured people fall into the “coverage gap,” meaning they will be ineligible for financial assistance in the Marketplace or for Medicaid in their state despite having an income below the federal poverty level.

  • How Will the Uninsured in Vermont Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Vermont, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Vermont are eligible for Medicaid or financial assistance in the Marketplace. For states not expanding Medicaid, the report quantifies how many uninsured people fall into the “coverage gap,” meaning they will be ineligible for financial assistance in the Marketplace or for Medicaid in their state despite having an income below the federal poverty level.

  • Kaiser Health Tracking Poll: March 2015

    Feature

    As the Affordable Care Act (ACA) marks its fifth anniversary, this month’s poll finds the gap between favorable and unfavorable opinions of the law has narrowed to the closest margin in over two years. Although the Supreme Court heard oral arguments for the King v. Burwell case in early March, the majority of the public continues to say they have heard only a little or nothing at all about the case. The survey also includes a look at Americans’ experiences reporting their insurance status on their taxes for the first time, and finds that nearly half are unaware that the requirement to report health insurance status on their taxes takes effect this year.