Annual Marijuana Use Percentages by Age Group and State (2013-2014)

Annual average percentages of marijuana use in the past year, categorized by age group and state, derived from the 2013 and 2014 National Surveys on Drug Use and Health (NSDUH). The data is published by the U.S. Department of Health & Human Services.

Use Cases

• Analyze marijuana use percentages by state to identify regional patterns in substance use.
• Compare marijuana use percentages across different age groups to understand demographic trends.
• Use the state and age group categories to model geographic and demographic variations in substance use prevalence.

Strengths

• Data originates from the authoritative NSDUH surveys conducted by the U.S. Department of Health & Human Services.
• Provides a two-year (2013 and 2014) annual average for temporal consistency.
• Covers all 50 U.S. states and the District of Columbia for comprehensive geographic coverage.

Limitations

• Data is over a decade old (2013-2014), limiting analysis of current trends.
• Specific sample sizes, row counts, and column definitions are not provided in the input.
• Data is presented as aggregated percentages, not individual-level records, restricting granular analysis.

Provenance

Source

U.S. Department of Health & Human Services, Substance Abuse and Mental Health Services Administration (SAMHSA).

Collection Method

Aggregated from the National Survey on Drug Use and Health (NSDUH) for 2013 and 2014.

Time Range

2013 and 2014 (annual averages).

Freshness

Data reflects 2013-2014 surveys; metadata was last updated in September 2025.

Geography

United States, all 50 states and the District of Columbia.