An estimated 29.7 million U.S. residents, or 9.2 percent, lacked health insurance when surveyed in the first nine months of 2018, according to preliminary data released recently by the Centers for Disease Control and Prevention. That’s about the same as in 2017. The uninsured rate for adults under age 65 was 8.1 percent in Medicaid expansion states, compared with 15.2 percent in non-expansion states. The report also includes estimates for various demographic groups and by health insurance marketplace type. Adults under age 65 were more likely to be uninsured in states with a federally-facilitated marketplace (13.5 percent) than in states with a state-based or partnership marketplace (7.5 percent).