This is a list of U.S. states by road deaths. Data are for the year 2021. Death data are from NHTSA, mileage figures are from the Bureau of Transportation Statistics and population data are from the US Census.
Per billion vehicle miles, South Carolina had the highest death rate while Massachusetts had the lowest. Mississippi had the most deaths per capita while Rhode Island had the lowest.
One third of fatal accidents involve alcohol. Deaths from speeding exceeded 12,000, half of which involved drivers not wearing a seatbelt, and a third of which involved male drivers aged 15 to 20. According to data from the National Highway Transit Safety Administration, roughly 1 in 4 fatal car crashes in the United States happen at an intersection. Most deaths were occupants of cars, but 17% were pedestrians, 14% were motorcyclists and 2% were cyclists.