The primary health insurance coverage reforms of the Affordable Care Act (ACA) began to take effect on January 1, 2014. Between 2013 and 2016, the most recent year of American Community Survey data available, the share of nonelderly Americans from birth to age 64 without health insurance fell from 17 percent to 10 percent, meaning that 18.5 million more Americans had health insurance coverage. These gains were broadly distributed across all demographic, socioeconomic, and geographic groups studied. The report below provides detailed estimates of changes in health insurance coverage types between 2013 and 2016 by demographic, socioeconomic, and geographic characteristics. In addition, state fact sheets detail coverage changes by income group in all 50 states and the District of Columbia.
State Fact Sheets