As evidence of the “suburbanization of poverty,” the Brookings Institution reports that the almost half of housing voucher recipients shifted from cities to suburbs from 2000 to 2008. This major demographic shift is a good indication that the poor have followed the relatively-affluent middle class to the ‘burbs en masse.
The shift has probably grown more dramatic since 2008, according to the Freakonomics blog, since many suburban dwellers wound up underwater on their mortgages as a result of the subprime meltdown—and in need of vouchers to pay for housing.
Housing vouchers are basically just a check that can be used towards rent. Vouchers are available to eligible low-income renters, although there is a waiting list to get into the program.