Mental Health By The Numbers


    Millions of people in the U.S. are affected by mental illness each year. It’s important to measure how common mental illness is, so we can understand its physical, social and financial impact — and so we can show that no one is alone. These numbers are also powerful tools for raising public awareness, stigma-busting and advocating for better health care.

    The information on this page and the downloadable Infographics and Fact Sheets comes from studies conducted by organizations like Substance Abuse and Mental Health Services Administration (, Centers for Disease Control and Prevention ( and the U.S. Department of Justice ( The terminology used is reflective of what is used in the original studies. Terms like “serious mental illness,” “mental illness” or “mental health disorders” may all seem like they’re referring to the same thing, but in fact refer to specific diagnostic groups for that particular study.

    If you have questions about a statistic or term that’s being used, please visit the original study by clicking the link provided.


    1 in 5 U.S. adults experience mental illness each year
    1 in 25 U.S. adults experience serious mental illness each year
    1 in 6 U.S. youth aged 6-17 experience a mental health disorder each year
    50% of all lifetime mental illness begins by age 14, and 75% by age 24
    Suicide is the SECOND LEADING CAUSE OF DEATH among people aged 10-34