- Cannabis use is more common in North America and high-income countries in Europe and Oceania.
- As of November 8, 2023, twenty four states, two territories and the District of Columbia have enacted measures to regulate recreational use of cannabis by adults.
- A survey conducted by Pew Research Center in 2022 revealed that 88% of U.S. adults believe that in some form marijuana use should be legal; 59% believe that marijuana should be legal for medical and recreational use by adults and 30% agree that it should be legal for medical use only 30%.
- According to the 2022 National Survey on Drug Use and Health conducted by SAMHSA, marijuana was the most commonly used illicit drug, with 22.0% of people aged 12 or older (or 61.9 million people) reporting use in the past year. The percentage was highest among young adults aged 18 to 25 (38.2% or 13.3 million people), followed by adults aged 26 or older (20.6% or 45.7 million people), then by adolescents aged 12 to 17 (11.5% or 2.9 million people)
- A recent study found a roughly 20% average increase in cannabis use frequency attributable to recreational legalization.
- The number of DUI summonses issued by the Colorado State Patrol in which marijuana-alone or marijuana-in-combination with other drugs or alcohol increased by 120% between 2014 and 2020
- In Colorado, the percentage of 18- to 25-year old probationers testing positive for THC increased from 32% in 2012 to 47% in 2019; the proportion of 36 and older probationers testing positive for THC increased from 14% in 2012 to 27% in 2019.