There is no comparison on the same terms with the USA in that.
From that article:
"Munich, Germany
They are known as "tramps", "winos", "hobos", "street people", "bums", or simply homeless. They are the poor within our rich society, unemployed and with no resources, living on the fringes. In official terms they are called "people in social distress" or more commonly "homeless". In the terms of social federal welfare laws they are classified as "people who roam with no secure form of income, singles without a home-address and regular employment capable of being taxed for social security, without a secured mode of existence and often without a sound relationship to either family or other community members.... people whose social problems prevent them from participating in community life."
Sounds pretty much like the universal description of homeless people to me.
From Wiki:
The U.S. Department of Housing and Urban Development in January 2012 annual point-in-time count found that 633,782 people across America were homeless. With 2007 as a benchmark, the data from the report showed a 6.8 percent decline in homelessness among individuals, a 3.7 percent decline of homeless families, a 13.1 percent decline of the unsheltered homeless population, and a 19.3 percent decline in persons experiencing chronic homelessness.