From the press release:
New England had the lowest percentage of uninsured individuals under age 65 in 2004-2006 and the Southwest had the highest, according to a report from the Centers for Disease Control and Prevention’s National Center for Health Statistics.
Overall, 91.1 percent of New Englanders had some kind of health insurance in 2004-2006. The Southwest had the greatest proportion of uninsured — 18.2 percent of children and nearly 30 percent of adults.
The report is based on data collected from 240,000 people under age 65 as part of the 2004-2006 National Health Interview Survey.
Health Insurance Coverage: Early Release of Estimates from the National Health Interview Survey, 2007