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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  • Estimated Medicaid Enrollment Loss From the House Budget Committee Reconciliation Bill, By State

    Allocating CBO’s Estimates of Federal Medicaid Spending Reductions and Enrollment Loss Across the States: House Reconciliation Bill

    Issue Brief

    The Congressional Budget Office’s (CBO) latest estimate shows that the One Big Beautiful Bill would reduce federal Medicaid spending by $793 and that the Medicaid provisions would increase the number of uninsured people by 7.8 million. Previous CBO estimates show that 10.3 million fewer people would be enrolled in Medicaid in 2034. Building on prior KFF analysis, this analysis allocates these estimated federal spending reductions and enrollment losses across the states.

  • Explaining Cost-Sharing Reductions and Silver Loading in ACA Marketplaces

    Policy Watch

    The House of Representatives recently passed a budget reconciliation bill that would appropriate funding for cost-sharing reductions that insurers are required to provide to low-income enrollees in the Affordable Care Act marketplace. This policy watch explains what these cost-sharing reductions are, how they relate to federal spending, and what effect appropriating funding might have on premiums and the uninsured rate.

  • KFF Survey of Medicaid Unwinding

    Poll Finding

    KFF's survey examines adults who had Medicaid coverage in early 2023, just before states resumed eligibility checks and disenrollments after pandemic-era protections ended. Nearly a quarter (23%) of adults who say they were disenrolled from Medicaid since early 2023 report being uninsured now. Overall, 19% of adults who had Medicaid prior to the start of unwinding say they were disenrolled at some point in the past year.

  • COVID-19 Vaccine Access for Uninsured Adults this Fall

    Policy Watch

    This policy watch provides an overview of how uninsured adults currently access recommended vaccines, how they have accessed COVID-19 vaccines thus far, including what is known about their vaccine uptake, and proposed plans to provide COVID-19 vaccines to uninsured adults this fall and beyond.

  • Bar chart shows the estimated 10-year federal spending reductions from delaying implementation of the Biden administration's Medicare Savings Program rule and the Eligibility and Enrollment rule. Delaying these two Medicaid eligibility rules will cut federal spending by $122 billion and increase the uninsured by 400,000 over ten years

    The Impact of H.R. 1 on Two Medicaid Eligibility Rules

    Issue Brief

    This issue brief describes the impact of H.R.1's 10-year delay in implementing provisions in two Medicaid eligibility rules that would have reduced red tape. The delayed rules are projected to decrease federal spending and future Medicaid and CHIP enrollment and increase coverage loss.

  • Potential Story Lines from Trump-Era Health Care Cuts

    Perspective

    In his latest column for the JAMA Health Forum, KFF’s Larry Levitt talks about how popular shows like “The Pitt” can make changes to the health care system stemming from this year’s federal tax and budget bill tangible for viewers, and offers some suggested story lines.

  • Map shows the percentage point increase in the uninsured population due to the budget reconciliation package based on CBO estimates, by state. An Additional 10M People Nationwide Could be Uninsured in 2034 Due to the Budget Reconciliation Law

    How Will the 2025 Reconciliation Law Affect the Uninsured Rate in Each State?

    Issue Brief

    This analysis apportions the increase in the number of uninsured across the 50 states and DC. CBO estimates that the reconciliation law will increase the number of uninsured by 10M in 2034 and rise to over 14M if enhanced premium tax credits for ACA Marketplace enrollees expire later this year.