Adult Marijuana Use

Current Marijuana use among King County adults has been on the rise

Updated Narrative Coming Soon

Further resources on marijuana use in King County:

Marijuana and health:

Marijuana legalization and health and human services:

Youth Marijuana Prevention:


Notes and Sources

Source: Behavioral Risk Factor Surveillance System (BRFSS) (2011-2015)

Numerator: Respondents who answered the following question as 1 or more days: “During the past 30 days, on how many days did you use marijuana or hashish (grass, hash, or pot)?”

Denominator: All respondents who answered the question.

The Behavioral Risk Factor Surveillance System collects information on the health and safety of Washington residents aged 18 and older. Every year, the Washington State Department of Health and the Centers for Disease Control and Prevention conduct the survey primarily through telephone interviews, including landline and cellphone numbers. To learn more about the survey, please go to: