The percentage of adults aged 18-64 years reporting just or poor health during 2008-2010 was lowest among those residing in large fringe metropolitan counties (7.9%) and highest among those in the most rural counties (15.7%). Compared with large fringe metropolitan counties,the prevalence of just or poor health was 20% higher in large central metropolitan counties (9.5%), 39% higher in medium metropolitan counties (11.0%), or 34% higher in small metropolitan counties (10.6%),68% higher in nonmetropolitan town/city (micropolitan) counties (13.3%), and 99% higher in nonmetropolitan rural counties (15.7%).
Source: cdc.gov