"In some counties in Oklahoma, a quarter to nearly a third of the population lacks health insurance. The highest percentages are found in smaller, rural counties, such as Cimarron County and Harmon County. Counties with higher poverty rates, such as in southeastern Oklahoma, tend to have greater shares of uninsured residents."
( Interactive by Darren Jaworski. Story by Chase Cook.) More than a fifth of Oklahomans under the age of 65 do not have health insurance, giving the state the sixth highest uninsured rate in the nation. More than 690,000 non-elderly Oklahomans, or 21.9 percent, were uninsured in 2010, according to the U.S.