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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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  • Strategies in 4 Safety-Net Hospitals to Adapt to the ACA

    Issue Brief

    This brief examines four safety-net hospitals to learn how they were preparing for the full implementation of the Affordable Care Act (ACA), in order to gain additional insight into the strategies being used and challenges being faced among safety-net hospitals across the country.

  • The Affordable Care Act and Insurance Coverage in Rural Areas

    Issue Brief

    Rural populations face disparities compared to metropolitan populations in health care. While rural individuals were not more likely to be uninsured than metropolitan counterparts pre-Affordable Care Act, they were poorer and less likely to have private insurance. With coverage changes in the ACA involving an expansion of Medicaid for poor and near-poor populations, decisions by states with large rural populations may cause rural residents to have disparate access to coverage, which may exacerbate cost and access barriers to health care.

  • Those Long Lines To Enroll In The ACA

    News Release

    In the latest post from the series Policy Insights, Kaiser Family Foundation President and CEO Drew Altman discusses the need for community based outreach to enroll the long term uninsured. All previous Policy Insights posts are archived online.

  • Measuring Changes in Insurance Coverage Under the Affordable Care Act

    Issue Brief

    This data note discusses the details and timing of some of the private and federal surveys that will be used to look at how coverage has changed due to the Affordable Care Act. Different surveys offer different information and insight into coverage under the ACA, and we discuss the contributions and challenges in each type of effort.

  • 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.

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

    Fact Sheet

    This report explains how the ACA expands coverage nationally, 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 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.