So while, according to federal data, Illinois made 30,000 arrests per 100,000 users in 2012, Massachusetts made only 275.
Much of the differences, of course, have to do with what the law says in each of these states. In many Northeastern states, marijuana possession is a civil offense rather than a crime. But even states with similar laws have vastly different levels of enforcement.
Here are the 10 strictest and least-strict states:
A similar imbalance can be found when it comes to drunk driving arrests.
For more information and maps (including a breakdown of the numbers for all citizens rather than just drug-users/binge-drinkers, as well as for illicit drugs), click here.