Despite highest median income in the nation, 17 other states have fewer uninsured people than Maryland Despite Maryland being the wealthiest state, 6.6 percent of people were uninsured in 2015, according to 2015 census data. Photo courtesy Hasan Eroglu/Shutterstock.com. Share this:Click to share on X (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)