Understanding the scope of mental health problems and treatment in the United States is central to NIMH’s mission. Much of what we understand in this area comes from research in the field of epidemiology; the scientific study of patterns of health and illness within a population. Research on psychiatric epidemiology shows that mental disorders are common throughout the United States, affecting tens of millions of people each year, and that only a fraction of those affected receive treatment.

The resource below represents an extensive collection of our best statistics on the prevalence, treatment, and costs of mental disorders. Equally important are sections that have been included on mental health-related disability and on suicide.

This resource is a continuing work in progress, and will be updated regularly as new statistics are released.

How to use this resource: Folders within each tab can be opened or closed by clicking on the plus or minus symbols (+/-). Clicking on a link will open the chart. Click your browser’s “back” button to return to the directory.