Health - Health insurance coverage (1) To resort data: click column headings. To download data: click here. County Name Percent uninsured, under age 65 Rank Percent uninsured, under age 65 Percent uninsured, under age 18 Source: 2005 - 2019: U.S. Bureau of the Census, Small Area Health Insurance Estimates, (https://www.census.gov/data-tools/demo/sahie/#/); DATE LAST UPDATED: September 27, 2021.