This brief compares 2017 to 2018 changes in insurance coverage across three national surveys: The American Community Survey, Current Population Survey, and National Health Interview Survey. Between 2017 and 2018, the American Community Survey and Current Population Survey showed increasing uninsurance among nonelderly Americans and losses of Medicaid and CHIP coverage, while the National Health Interview Survey showed no statistically significant changes in coverage. Additionally, the American Community Survey showed increasing employer coverage and declining private nongroup coverage between 2017 and 2018, while the other two surveys showed no statistically significant change in employer or private nongroup coverage.