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Uninsured

Data and analysis

The coverage gap exists because some states did not expand Medicaid under the ACA to cover adults under age 65 without dependent children with incomes at/below 138% of the federal poverty level (FPL)

How Many Uninsured Are in the Coverage Gap?

An estimated 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 ACA tax credits that would make coverage affordable.

The Uninsured 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.

Key Facts on Health Coverage of Immigrants

This fact sheet provides an overview of health coverage for immigrants based on data from the 2023 KFF/LA Times Survey of Immigrants. As of 2023, half of likely undocumented immigrant adults and one in five lawfully present immigrant adults reported being uninsured.

New and noteworthy

Affordability Is the Issue Now, But Look for the Uninsured to Make a Comeback

A new column on the uninsured from President and CEO Dr. Drew Altman explains: “The uninsured is not the most politically salient problem in health care now, that’s affordability, nor is it the non-problem some say it is. But it’s coming back. And the problem of the chronically ill uninsured is glaring.” Read more.

Key Facts about the Uninsured Population

The number and share of people without insurance grew in 2024, increasing for the first time since 2019, according to KFF’s analysis of data from the American Community Survey (ACS). This issue brief describes trends in health coverage in 2024, examines the characteristics of the uninsured population , and summarizes the access and financial implications of not having coverage.

More on the uninsured population >>

Who was uninsured in 2024?

Latest Polling
9.8%

The share of people under age 65 without insurance
62%

The share of uninsured adults who said they were uninsured because coverage is not affordable
59%

The share of uninsured adults who said they or someone living with them had problems paying for health care
39%

The share of uninsured adults who reported delaying or not getting needed care or medication due to cost
Other key facts about the uninsured >>

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  • Expanding Medicaid under Health Reform: A Look at Adults at or below 133% of Poverty

    Issue Brief

    This issue brief from the Kaiser Commission on Medicaid and the Uninsured examines the key characteristics of the 17.1 million low-income uninsured adults who currently have incomes that would qualify them for Medicaid under the expansion of the program in health reform. The planned expansion of Medicaid to all individuals with incomes at or below 133 percent of the federal poverty level will establish a national foundation of coverage based on income. Adults whose incomes…

  • Few Uninsured Know Date of Pending Deadline for Obtaining Marketplace Coverage; Many Say They Will Get Coverage Soon, Though Cost is a Concern

    News Release

    Most Democrats Like Medicare-for-All, But Very Few Say the Issue Will Drive Their Votes in the 2016 Elections Similar to Last Month, More Hold Unfavorable Views of the ACA than Favorable Ones The Affordable Care Act's third open enrollment period will end on Jan. 31, but the latest Kaiser Health Tracking Poll finds that only a small share of people without health insurance realize it. Just 7 percent of the uninsured correctly identify January as…

  • A Guide to Understanding Medicaid Expansion Waivers as States Debate What to Do Under the ACA

    News Release

    With the recent governors’ elections in Kentucky and Louisiana refocusing attention on state Medicaid expansion decisions, a newly updated issue brief from the Kaiser Family Foundation provides an overview of the waivers obtained by six states – Arkansas, Iowa, Michigan, Indiana, New Hampshire and Montana -- that are pursuing alternative Medicaid expansions under the Affordable Care Act.

  • Covering the Remaining Uninsured: Not Just a Red-State Issue

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman explains why covering the nation’s remaining uninsured population is more than just a red state issue. All previous columns by Drew Altman are available online.  

  • The Louisiana Health Care Landscape

    Fact Sheet

    This fact sheet provides an overview of resident socio-demographic characteristics, population health, health coverage, and the health care delivery system in Louisiana both pre-Hurricane Katrina and in the era of health reform.

  • Survey: Assisters Help Estimated 5.3 Million During 2016 ACA Open Enrollment, Down 10 Percent from Prior Year

    News Release

    During the third Affordable Care Act open enrollment period, assistance programs helped an estimated 5.3 million people -- a number that was 10 percent lower than the prior year and that included a higher share of people renewing coverage, finds a new Kaiser Family Foundation survey of assister programs and brokers. Both assisters and brokers report a shift toward more return customers among those who sought assistance during the 2016 ACA open enrollment period, which…

  • The Affordable Care Act Doesn’t Rank Highly As an Issue for Voters in the Presidential Primaries

    News Release

    Despite Anecdotal Reports about Narrow Networks, 87% of Working-Age Adults with Insurance Are Satisfied With Their Plan's Choice of Doctors; 12% Say They Had to Change Doctors in Past Year As the ACA's Open Enrollment Nears End, Most of Those Who Remain Uninsured Are Disengaged While this month Congress passed and President Obama vetoed legislation to repeal the Affordable Care Act, voters nationally aren't focused on the law in this year's presidential election, the latest…

  • A Final Look: California’s Previously Uninsured after the ACA’s Third Open Enrollment Period

    Report

    The Kaiser Family Foundation California Longitudinal Panel Survey is a series of surveys that, over time, tracked 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. After each enrollment period…

  • New Survey Finds 72% of Previously Uninsured Californians Now Have Coverage, Including 78% of Those Eligible for New Affordable Care Act Options

    News Release

    For Remaining Uninsured Residents, Cost and Immigration Status Are Main Obstacles Three years after the Affordable Care Act’s coverage expansions were fully implemented in California, nearly three quarters (72%) of the state’s previously uninsured residents now have health coverage, finds the fourth Kaiser Family Foundation Longitudinal Panel Survey, which is tracking the experiences of a randomly selected group of Californian adults who were uninsured in 2013. This is similar to the share who reported having insurance…