There is a website that evaluates counties based on a variety of health-related factors and gives them a final ranking. The data are quite interesting, so I decided to pull a few of the variables out for a visualization.

Here, I’ve mapped sexually transmitted infection (STI) rates, which are based entirely on chlamydia cases, as well as the teen birth rates. Some counties did not supply data, so they are shaded black. The top scatter plot graphs these variables against each other. You can see that there is a weak positive correlation, with some extreme outliers. The bottom scatter plot pairs teen birth rate with median household income. Not surprisingly, there is a moderate negative (inverse) correlation, with the richest counties generally having lower teen birth rates.

Data source: http://www.countyhealthrankings.org/rankings/data (2013 rankings)