The folks over from Kicking Tires have posted an interesting survey said to be commissioned by an insurance-related website called "Insure" that shows the average cost of rates in the 50 states from the country's top six insurers.
According to the website, data was collected from drivers of 2,400 vehicles and sourced from 10 ZIP codes per state. Of course, different states have different standards and policies, meaning that some of the information positively and negatively skewed (hey, nothing's perfect).