In the latest report by NIMH, there were an estimated 9.8 million adults aged 18 or older in the United States with SMI within the past year. This number represented 4.0% of all U.S. adults.
There were an estimated 43.4 million adults aged 18 or older in the United States with a reported mental illness. This number represented 17.9% of all U.S. adults.
Approximately 13% of children ages 8 to 15 report a diagnosable mental disorder. The most common disorder among this age group is attention-deficit/hyperactivity disorder (ADHD), which affects 8.5% of this population. This is followed by mood disorders broadly at 3.7%, and major depressive disorder specifically at 2.7%.
According to (SAMHSA) latest report, 13.4% of adults in the United States receive treatment for a mental health problem. This includes all adults who received care in inpatient or outpatient settings and/or used prescription medication for mental or emotional problems.