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.

This follow-up survey of adults who had ACA Marketplace insurance in 2025 examines the cost concerns and coverage changes they are experiencing following the expiration of the enhanced premium tax credits. About one in 10 Marketplace enrollees dropped their ACA coverage and are now uninsured.

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.

Get data on health insurance status for the population overall and broken down by age, gender, and income. More than 800 up-to-date health indicators at the state level can be mapped, ranked, and downloaded through State Health Facts.

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 tax credits that would make ACA coverage affordable to them.

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.