07/25/2019
Rates of schizophrenia are generally similar from country to country—about .5% to 1 percent of the population (there are variations - but the variance is difficult to track due to differing measuring standards in many countries, etc.). Source: Dr. Robin Murray.
Another way to express the prevalence of schizophrenia at any give time is the number of individuals affected per 1,000 total population. In the United States that figure is 7.2 per 1,000. This means that a city of 3 million people will have over 21,000 individuals suffering from schizophrenia.
Incidence: The number of people who will be diagnosed as having schizophrenia in a year is about one in 4,000. So about 1.5 million people will be diagnosed with schizophrenia this year, worldwide. About 100,000 people in the United States will be diagnosed with schizophrenia this year.
[Note: The term 'prevalence' of Schizophrenia usually refers to the estimated population of people who are living with Schizophrenia at any given time. The term 'incidence' of Schizophrenia refers to the annual diagnosis rate, or the number of new cases of Schizophrenia diagnosed each year. ]
Prevalence of schizophrenia compared to other well-known diseases
Therefore, the approximate number of people in the United States suffering from:
Schizophrenia: Over 2.2 million people
Multiple Sclerosis: 400,000 people
Insulin-dependent Diabetes: 350,000 people
Muscular Dystrophy: 35,000 people