Mental Illness Population
In 2010, there were an estimated 45.9 million adults aged 18 or older in the United States with any mental illness.* That is equal to 20% of all U.S. adults.
* Substance Abuse and Mental Health Services Administration. Results from the 2010 National Survey on Drug Use and Health: Mental Health Findings, NSDUH Series H-24, HHS Publication No. (SMA) 11-4667. Rockville, MD: Substance Abuse and Mental Health Services Administration, 2012, p 1.