According to the CDC, one in six American adults is a binge drinker:
The study — which defines binge drinking as five or more drinks in a short period of time for men and four or more for women — breaks down the nation’s 38 million binge drinkers by a variety of measures, including geography, age and income level. Wisconsin is the state with the most binge drinkers at 25 percent of the population, while Utah, home to the teetotaling Mormon church, comes in last at less than 11 percent. [...]
The CDC report noted that half of all alcohol consumed in the U.S. is consumed during binge drinking. For young people, that rate shoots up to 90 percent.