A new report shows more poor people have moved to the nation's suburbs, outnumbering those in urban areas.

The Brookings Institution study released Monday says those in poverty living in suburbs jumped 67 percent between 2000 and 2011. But suburbs still have a smaller percentage of their population living in poverty than cities do.

Researchers said the shift to the suburbs can be attributed to affordable housing, service-sector jobs and the increased mobility of housing vouchers.