Total demand for marijuana, measured in metric tons, is estimated for the State of Colorado in this 2014 report. The process of estimation—including current demand, estimates for potential demand, who the users are, use trends and where supply modalities—reveals a number of new and unique characteristics related to Colorado’s market for marijuana. This study finds total marijuana demand to be much larger than previously estimated. Heavy users drive almost 70 percent of total marijuana demand, and the prevalence of heavy users in Colorado is higher than the national average.