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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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  • The 2005 Kaiser Low-Income Coverage and Access Survey: Survey Methods and Baseline Tables

    Issue Brief

    The 2005 Kaiser Low-Income Coverage and Access Survey: Survey Methods and Baseline Tables This document details the methods used to develop the 2005 Kaiser Low-Income Coverage and Access Survey dataset and presents baseline tables on population demographics, overall and by health coverage. The Kaiser Family Foundation conducted this national survey to examine health insurance coverage, access to care and the impact of health costs on the low-income population. The majority of the uninsured are low-income,…

  • Spotlight on Low-Income Uninsured Young Adults: Causes and Consequences

    Issue Brief

    Spotlight on Low-Income Uninsured Young Adults: Causes and Consequences This brief is the latest in a series using data from the 2005 Kaiser Low-Income Coverage and Access Survey to examine health coverage, access, and financial burdens associated with health care for young adults ages 19 to 29 in low-income families. The findings demonstrate that many low-income uninsured young adults experience problems gaining access to needed health care, with adverse consequences for both their health and…

  • How Does Health Coverage and Access to Care for Immigrants Vary by Length of Time in the U.S.?

    Issue Brief

    This analysis, based on data from the 2007 Health Tracking Household Survey, examines how health coverage and access to care for non-elderly adults vary based on immigrants’ length of time in the U.S. and between immigrants, second generation Americans and third generation and higher Americans. It also identifies the primary factors contributing to lower health coverage rates and greater access barriers among immigrants. While, overall, immigrants have a high uninsured rate and face greater access…

  • Topline: Kaiser Health Tracking Poll – June 2009

    Poll Finding

    This document contains the toplines from the June Health Tracking Poll. The survey was designed and analyzed by public opinion researchers at the Kaiser Family Foundation and was conducted June 1 through June 8, 2009, among a nationally representative random sample of 1,205 adults ages 18 and older. Telephone interviews conducted by landline (804) and cell phone (401, including 157 who had no landline telephone) were carried out in English and Spanish. The margin of…

  • Chartpack: Kaiser Health Tracking Poll — July 2009

    Poll Finding

    This document contains the chartpack from the July Health Tracking Poll. The survey was designed and analyzed by public opinion researchers at the Kaiser Family Foundation and was conducted July 7 through July 14, 2009, among a nationally representative random sample of 1,205 adults ages 18 and older. Telephone interviews conducted by landline (800) and cell phone (405, including 126 who had no landline telephone) were carried out in English and Spanish. The margin of…

  • Briefing – A Foundation for Health Reform: Findings of An Annual 50-State Survey of Eligibility Rules, Enrollment and Renewal Procedures and Cost-Sharing Practices in Medicaid and CHIP for Children and Parents During 2009

    Report

    In 2009, despite the bleakest economic picture in years, states managed to safeguard and in some cases expand health coverage for children and parents in their Medicaid and Children's Health Insurance Programs, according to the Kaiser Family Foundation's annual 50-state survey of Medicaid and CHIP eligibility rules, enrollment and renewal procedures and cost-sharing Practices. That was in large part due to the substantial help that states received through the congressional reauthorization of CHIP and the…

  • Medicaid and Managed Care: Implications for Low-income Women

    Report

    This commentary reviews Medicaid's role for low-income women and examines the implications Medicaid managed care on the delivery of health services to this vulnerable population. Today 40% of the Medicaid population, mostly poor women and their children, is enrolled in managed care. Medicaid agencies are hoping managed care will control spending and address longstanding problems with access to care. Low-income women have a number of characteristics that make them doubly vulnerable to have trouble accessing…

  • Health Centers’ Role as Safety Net Providers for Medicaid Patients and the Uninsured

    Report

    This issue paper profiles the role America's health centers have played in providing care for Medicaid patients and the uninsured. The paper presents information on health center patients and revenue sources and analyzes similarities and differences both between health centers and private practices and among health centers. These centers perform a unique role in the American health care system as nearly 85 percent of their patients are low-income and more than a third of their…