This is the state with the highest uninsured rate by Laura Lorenzetti @FortuneMagazine September 17, 2015, 5:11 PM EDT E-mail Tweet Facebook Linkedin Share icons Texas leads the nation with the highest percentage of residents without health insurance, even though more than 700,000 people procured health insurance last year in the state. About 5 million Texans still live without health insurance, according to recent data from the U.S. Census Bureau. That’s equal to 19.1% of the state’s population, making it the state with the highest uninsured rate. Nationwide, the uninsured rate stands at about 12%. Courtesy of U.S. Census Bureau Texas has been slowly improving health insurance signups, bringing down the number of uninsured by 3 percentage points year-over-year. Part of that is due to the federally-mandated insurance exchanges under Obamacare, which enrolled more than one-million Texans in health insurance plans. The other top five uninsured states include Alaska (17.2%), Florida (16.6%), Georgia (15.8%) and Oklahoma (15.4%).