Which Health Insurers Dominate Each U.S. State?🏥

What We’re Showing

This graphic shows the largest health insurance company in each U.S. state, based on data from the American Medical Association.

Figures are as of 2023 and are based on the share of total U.S. enrollments.

Key Takeaways

• The U.S. health insurance industry is highly concentrated, with a single insurer having at least a 50% market share in 13 states.
• Alabama, Kentucky, and Louisiana have the most concentrated health insurance markets, where a single insurer covers 86%, 67%, and 66% of total enrollments in each state, respectively.
• Across highly concentrated markets, health care bills and health care spending has been shown to be higher as insurers are less likely to reimburse hospitals for patient care.