State-Level Adult Mental Illness Prevalence Estimates from 2008-2010 NSDUH

U.S. Department of Health & Human Services provides annual average percentages of any mental illness in the past year for adults aged 18 or older. The data is aggregated by state and substate regions based on the 2008-2010 National Survey on Drug Use and Health.

Use Cases

• Map state and substate region variations in mental illness prevalence percentages to identify geographic disparities.
• Analyze trends in annual average mental illness estimates across the three-year survey period.
• Benchmark adult mental health outcomes using the NSDUH's standardized survey methodology.

Strengths

• Data originates from the authoritative National Survey on Drug Use and Health (NSDUH).
• Provides estimates at both state and more granular substate region levels.
• Covers a defined three-year period from 2008 to 2010.

Limitations

• Data is over a decade old and may not reflect current mental health prevalence.
• Estimates are aggregated percentages; underlying individual-level survey data is not provided.
• Available only in HTML format, complicating direct programmatic analysis.

Provenance

Source

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

Collection Method

Annual averages calculated from the National Survey on Drug Use and Health (NSDUH).

Time Range

2008 to 2010.

Freshness

Metadata was updated in 2025, but the underlying data covers 2008-2010.

Geography

United States, by state and substate regions.