This report is the first to examine marijuana possession arrest rates by race for all 50 states (and the District of Columbia) and their respective counties from 2001 to 2010. The report relies on the Federal Bureau of Investigation’s Uniform Crime Reporting Program and the United States Census’ annual county population estimates to document arrest rates by race per 100,000 for marijuana possession. The report finds that between 2001 and 2010, there were over 8 million marijuana arrests in the United States, 88% of which were for possession. Marijuana arrests have increased between 2001 and 2010 and now account for over half (52%) of all drug arrests in the United States, and marijuana possession arrests account for nearly half (46%) of all drug arrests. In 2010, there was one marijuana arrest every 37 seconds, and states spent combined over $3.6 billion enforcing marijuana possession laws.

The report also finds that, on average, a Black person is 3.73 times more likely to be arrested for marijuana possession than a white person, even though Blacks and whites use marijuana at similar rates. Such racial disparities in marijuana possession arrests exist in all regions of the country, in counties large and small, urban and rural, wealthy and poor, and with large and small Black populations. Indeed, in over 96% of counties with more than 30,000 people in which at least 2% of the residents are Black, Blacks are arrested at higher rates than whites for marijuana possession.