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The estimated percentage of adults aged 18 and older who report not having any form of health insurance coverage. Coverage includes private health insurance, Medicaid, Medicare, military health plans, or other government-sponsored insurance. Those without coverage are classified as uninsured. The data is sourced from the Centers for Disease Control and Prevention (CDC), PLACES: Local Data for Better Health. Estimates are derived from the Behavioral Risk Factor Surveillance System (BRFSS) combined with U.S. Census Bureau American Community Survey (ACS) demographic data, using multilevel regression and post-stratification methods.
Why does this Matter?
- Significantly higher risk of death among uninsured adults
- Adults without health insurance face substantially increased mortality rates—studies have found that being uninsured is associated with a 25% higher risk of death, and estimates suggest around 45,000 excess deaths annually are linked to lack of coverage.1
- Reduced access to preventive and primary care
- Individuals without insurance are far less likely to receive preventive services like screenings and chronic disease management, resulting in delayed care, increased hospitalizations, and worse health outcomes.2
- Health insurance expansion saves lives and reduces mortality disparities
- Evidence shows that expanding coverage—such as through Medicaid—reduces mortality among low-income adults by around 2.5%, closing the gap in life expectancy across income groups.3
1 Steffie Woolhandler, David U. Himmelstein. The Relationship of Health Insurance and Mortality: Is Lack of Insurance Deadly?. Ann Intern Med.2017;167:424-431. [Epub 27 June 2017]. doi:10.7326/M17-1403
2 Office of Disease Prevention and Health Promotion. (n.d.). Access to Primary Care (Literature Summary). Healthy People 2030, U.S. Department of Health and Human Services. Retrieved September 2, 2025, from https://odphp.health.gov/healthypeople/priority-areas/social-determinants-health/literature-summaries/access-primary-care
3 Wyse, A., & Meyer, B. D. (2025). Saved by Medicaid: New Evidence on Health Insurance and Mortality from the Universe of Low-Income Adults (NBER Working Paper No. w33719). National Bureau of Economic Research. https://doi.org/10.3386/w33719