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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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  • JAMA Forum: Why Health Insurance Literacy Matters

    Perspective

    Larry Levitt's November 2014 post looks at the challenges with people not understanding basic health insurance concepts as millions of them evaluate and choose health plans during open enrollment season for insurance in 2015.

  • Kaiser Health Tracking Poll: November 2014

    Feature

    Following the Nov. 4 midterm elections, nearly half of Americans expect increased debate between the two parties over the Affordable Care Act. In comparison, 42 percent say the amount of debate will not change, and very few (5%) say it will decrease. Conducted just prior to the start of the ACA's second open enrollment season, the poll also probes the views of people without health insurance, one of the key target groups for outreach and enrollment efforts. It finds the uninsured remain largely unaware of the renewed opportunity to purchase or enroll in health insurance through the marketplaces over the next few months.

  • Health Insurance Explained: The YouToons Have it Covered

    Video

    In this five-minute animated video, the YouToons help consumers understand their health insurance through fun, easy-to-understand explanations and scenarios. This cartoon serves as a tutorial for consumers and organizations. The YouToons previously appeared in the 2010 animated movie, "Health Reform Hits Main Street" and the 2013, "The YouToons Get Ready for Obamacare: Health Insurance Changes Coming Your Way Under the Affordable Care Act."

  • Early Impacts of the Medicaid Expansion for the Homeless Population

    Issue Brief

    This analysis provides an early look at the impact of the expansion for homeless providers and the patients they serve. It is based on focus groups conducted with administrators, providers, and enrollment workers at four sites serving homeless individuals in states that have expanded Medicaid (Albuquerque, NM; Baltimore, MD; Chicago, IL; and Portland, OR) and one site in a state that has not expanded (Jacksonville, FL), as well as administrative data collected from the sites.

  • Data Note: Gearing Up For Round 2 of Open Enrollment: Some Lessons From Round 1

    Poll Finding

    As the second round of open enrollment approaches, policy makers, journalists, insurers and enrollment groups may want to keep in mind what health insurance shoppers told us about their experiences during the first open enrollment period. This data note examines selected findings from two Kaiser Family Foundation surveys that shed light on how people navigated the new options and choices available under the ACA during last fall’s open enrollment, with the hope of helping to inform our understanding of individuals needs during this second open enrollment period.

  • Nine in Ten Uninsured Unaware that the Affordable Care Act’s Second Open Enrollment Period Starts in November

    News Release

    Most of Those Without Health Coverage Report Knowing Little or Nothing About the Insurance Marketplaces or About the Financial Assistance Available to Low- and Moderate-Income Families Broader Public Opinion on the Law Still Tilts Unfavorably, Though Gap Has Narrowed Since July and Returned to Pre-Rollout Levels With the second annual open enrollment period under the…

  • Kaiser Health Tracking Poll: October 2014

    Feature

    In the final Kaiser Health Tracking Poll before the 2014 midterm elections in November, the Affordable Care Act (ACA) continues to be just one of several issues on voters’ minds. Less than 1 in 10 registered voters identify the ACA as the most important issue to their vote, ranking behind the economy, dissatisfaction with government, education and the situation in Iraq and Syria. With the ACA’s second open enrollment period approaching, the poll also finds the uninsured are not yet tuned in. About 9 in 10 of the uninsured are unaware of when the next open enrollment period begins, two thirds say they know “only a little” or “nothing at all” about the marketplaces, and just over half are unaware of financial assistance available.

  • Data Note: 5 Misconceptions Surrounding the ACA

    Feature

    On the seventh anniversary of the passing of the Affordable Care Act, this Data Note highlights five of the most common misconceptions surrounding the 2010 health care law.