Fact: About 750,000 people are arrested every year for marijuana offenses in the U.S. There's a lot of variation across states in what happens next. Not all arrests lead to prosecutions, and relatively few people prosecuted and convicted of simple possession end up in jail. Most are fined or are placed into community supervision. About 40,000 inmates of state and federal prison have a current conviction involving marijuana, and about half of them are in for marijuana offenses alone; most of these were involved in distribution. Less than one percent are in for possession alone.