More than 9 in 10 people in the U.S. — 91.1% of the population — had some type of health insurance coverage in 2018, according to a recent report by the U.S. Census Bureau. However, the rates and types of coverage can vary widely from state to state.

Following are the states with the smallest proportion of uninsured residents and therefore the biggest share of people covered by health insurance, whether by private plans (like employer-paid coverage and direct purchase plans) or public insurance programs (usually Medicaid and Medicare).