Mental illnesses are common in the United States, affecting tens of millions of people each year. One in five individuals in the United States will be diagnosed with a mental health disorder in their lifetime, and 17 percent of youth (six-17 years old) experience a mental health disorder.

Mental illness is also common in Washington State, where three out of every seven people will likely experience a clinically significant mental illness in 2021, with that number expected to rise in the coming years.