Despite new innovations in auto safety features, traffic fatalities increased by 7.2 percent nationwide from 2014 to 2015.
Within each state, rates of traffic fatalities can vary wildly. That's why AxleGeeks, a transportation research site, decided to identify the most dangerous county in every state for car accidents.
To compile this list, AxleGeeks looked at data from the National Highway Traffic Safety Administration from 2000 to 2015 and found the county with the most car-related fatalities in every state. AxleGeeks then found the percent each county contributed to its state's total fatalities. The list is organized alphabetically by state.
In most cases, the most populous county in each state also had the largest number of traffic-related deaths. There are some interesting exceptions, though. For instance, both El Paso County in Colorado and Worcester County in Massachusetts rank No. 1 in their respective states for auto fatalities, despite not being the most populous county. This could be due to a number factors, including longer commute times and fewer public transportation options outside of the major metro areas.
*Note that we did not use per capita figures because it filtered for the smallest counties unequivocally. Moreover, we did not use a population filter because the fatalities in one county may be completely unrelated to the residents of said county. While this methodology typically featured the most populous county, it was ultimately considered a more accurate representation of the most dangerous county.