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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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  • El seguro de salud, explicado: ¡los YouToons lo tienen cubierto!

    Video

    El seguro de salud, explicado: ¡los YouToons lo tienen cubierto! desglosa conceptos de seguros como primas, deducibles y redes de proveedores.  Explica cómo las personas pagan por su cobertura y cómo obtener cuidado médico y medicamentos recetados con distintos tipos de seguros de salud, incluyendo HMOs y PPOs.

  • Media Briefing to Release New Survey Tracking California’s Previously Uninsured Residents Under the Affordable Care Act

    Event Date:
    Event

    Media-only web briefing that released a new survey tracking the experiences of California's previously uninsured residents under the Affordable Care Act (ACA). New survey provides a detailed assessment of how well the ACA is working for previously uninsured residents in a state that embraced the ACA's coverage expansion opportunities by establishing the Covered California insurance marketplace and expanding its Medi-Cal program.

  • 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.

  • New Kaiser Survey Finds Eleven Million Newly Insured Adults As of Mid-December, But Nearly Half Who Remained Uninsured One Year After Full Implementation of the Affordable Care Act Were Eligible for Medicaid or Marketplace Tax Credits

    News Release

    Many Of The Remaining Uninsured Say They Didn’t Seek Coverage or Considered It Too Expensive, While Others Were Told (Or Believed) They Were Not Eligible About 11 million adults had become newly insured under the Affordable Care Act by mid-December 2014, according to a new national survey of more than 10,000 adults by the Kaiser…

  • Are Uninsured Adults Who Could Gain Medicaid Coverage Working?

    Fact Sheet

    As additional states consider whether to implement the ACA Medicaid expansion, some have raised pursuing waiver authority to tie Medicaid eligibility for adults under the expansion to work requirements. This fact sheet profiles uninsured adults who could gain Medicaid coverage under the ACA by their relationship to the workforce and job-based coverage.

  • The Health-Care Enrollment Story Is in the States

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman examines the variation among states beneath the national Affordable Care Act’s Marketplace enrollment numbers released by the Department of Health and Human Services.