The geography of drinking also offered some surprises. Users in Montana and South Dakota had the highest average BAC, at 0.101 percent, while the lowest were in New Hampshire (0.012), Delaware (0.027), and Utah (0.031), where the dominant Mormon Church forbids alcohol consumption.
BACtrack Mobile data jibes with arrests for drunk driving. Montana had the highest number of arrests per capita in 2013. New Hampshire had the lowest.