The U.S. Census Bureau recently released 2010 estimates of health insurance coverage for each of the nation’s roughly 3,140 counties.
Small Area Health Insurance Estimates (SAHIE; http://www.census.gov/did/www/sahie/index.html) are the only source for single-year estimates of health insurance coverage status for every county in the nation. These estimates are available by sex, age groups, race and Hispanic origin (for states only), and income-to-poverty ratios.
Kiper, Melanie, "Twenty counties in Nebraska have uninsured rate over 20 percen" (2012). Publications since 2000. 57.