The United Health Foundation ranked Oklahoma as the 43rd healthiest state in the country in 2017. While it's not anything to write home about, it is a 3-point improvement from 2016. But which Oklahoma counties are healthiest?

CountyHealthRankings.org provides the answer. Per their website:

Published online at countyhealthrankings.org, the Rankings help counties understand what influences how healthy residents are and how long they will live. The Rankings are unique in their ability to measure the current overall health of nearly every county in all 50 states. They also look at a variety of measures that affect the future health of communities, such as high school graduation rates, access to healthy foods, rates of smoking, obesity, and teen births. Communities use the Rankings to help identify issues and opportunities for local health improvement, as well as to garner support for initiatives among government agencies, healthcare providers, community organizations, business leaders, policy makers, and the public.

Here are all 77 counties, ranked from least healthy to healthiest.