About 150,000 Americans are homeless in the way you worry about homelessness: Suffering from addictions and other mental illnesses, they sleep on the street, and stay there for months or years. Most of these homeless people would have been institutionalized before the de-institutionalization of the 1970's.
Another 400,000 have no more addictions or mental illness than the housed population. They sleep in cars, shelters, or other protected sites. Their homelessness lasts for several days or weeks and then they are able to obtain housing again.
About 150,000 Americans are homeless in the way you worry about homelessness: Suffering from addictions and other mental illnesses, they sleep on the street, and stay there for months or years. Most of these homeless people would have been institutionalized before the de-institutionalization of the 1970's.
Another 400,000 have no more addictions or mental illness than the housed population. They sleep in cars, shelters, or other protected sites. Their homelessness lasts for several days or weeks and then they are able to obtain housing again.