Fresh data from the Centers for Disease Control shows 48.6 million Americans of all ages (16.0 percent of the population) lacking health insurance at the time of the survey in 2010. Also at that point in time 7.8 percent of children under 18 and 33.9 percent of young adults (19-25) were uninsured.
CDC researchers also crunched the 2010 numbers for the 20 largest states. The percentage of uninsured people ranged from 4.0 percent in Massachusetts to 26.1 percent in Arizona. California came in bit above the national average at 18.6 percent.
In 2010 60.2 percent of Americans had health insurance coverage provided by private (non-governmental) sources; 31.4 percent had coverage provided by government -- including Medicaid, Children's Health Insurance Program (CHIP), state-sponsored or other government-sponsored health plan, Medicare (disability), and military plans. In California the private/public split was 56.1 and 28.8 percent, respectively.