Uninsured

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)

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  • Insurance Coverage Changes for People with HIV Under the ACA

    Issue Brief

    This brief provides the first national estimates of changes in insurance coverage among people with HIV since the implementation of the ACA. We find that coverage increased significantly for people with HIV due to the ACA’s Medicaid expansion; indeed, increased Medicaid coverage in expansion states drove a nationwide increase in coverage for people with HIV.

  • Current Flexibility in Medicaid: An Overview of Federal Standards and State Options

    Issue Brief

    The Trump Administration and new Congress have indicated that they will seek to cap Medicaid financing through a block grant or per capita cap, reduce federal funding for the program, and offer states increased flexibility to manage their programs within this more limited financing structure. The size of the federal reductions as well as which federal program standards would remain in place and what increased flexibility might be provided to states under such proposals would have significant implications. To help inform discussion around increased flexibility, this brief provides an overview of current federal standards and state options in Medicaid and how states have responded to these options in four key areas: eligibility, benefits, premiums and cost sharing, and provider payments and delivery systems.

  • High-Risk Pools as Fallback for High-Cost Patients Require New Rules

    From Drew Altman

    In this Wall Street Journal Think Tank column, Drew Altman examines how Republicans would “split the risk pools” between the healthier and the sick in their Affordable Care Act replacement plans, using state high risk pools as a fallback for higher cost patients, and examines the steps that would be necessary to make them effective based on prior experience in the states.

  • Obamacare Debate: Where GOP Governors Stand on Repeal and Replace

    From Drew Altman

    As congress prepares to vote on repeal of the Affordable Care Act, Drew Altman discusses whether Republican governors and congressional Republicans will be at odds over key issues when it comes to repealing and replacing the law in this Wall Street Journal Think Tank column.

  • The Health Care Plan Trump Voters Really Want

    From Drew Altman

    In a New York Times op-ed, Drew Altman draws on observations from focus groups in rust belt states of people in the Affordable Care Act (ACA) marketplaces who voted for President-elect Trump and say they may not like their coverage under the ACA but could like Republican replacement plans even less.

  • Where President-elect Donald Trump Stands on Six Health Care Issues

    Issue Brief

    Where does President-elect Donald Trump stand on key health care issues? This snapshot outlines his positions and policy statements during the campaign on issues such as health insurance, the ACA, Medicaid, Medicare, the opioid epidemic, prescription drug costs, and women's reproductive health.

  • Analysis: Nearly 12 Million People Who Remain Uninsured Are Eligible for Financial Help Under the Affordable Care Act, About Half Through Medicaid and Half Through the Marketplaces

    News Release

    As the Nov. 1 start of the Affordable Care Act’s fourth open enrollment period approaches, a new Kaiser Family Foundation analysis estimates that 11.7 million people who remain without health insurance are eligible for Medicaid in their state or for tax credits to purchase health insurance through their state’s Affordable Care Act marketplace.