Here's the US City with the Highest Pot Use

San Francisco has a new claim to fame: The city has the highest rate of marijuana use in the country, according to a new survey. In the survey, which was conducted from 2012 to 2014 nationwide, 15.5 percent of people in San Francisco said they had used marijuana in the past month. Perhaps not surprisingly, parts of Colorado (where recreational marijuana use is legal) also had high rates of marijuana use.