The Urban Institute is undertaking a comprehensive monitoring and tracking project to examine the implementation and effects of health reform. A way of doing so is to examine silver benchmark premiums for every rating region for 2016 and 2017, differentiating between predominantly urban and rural premium rating areas.
A report can be obtained at https://www.urban.org/sites/default/files/publication/99341/moni-ruralurban_-_final_0.pdf.