Brookings has a piece on concentrated poverty HERE that includes an interactive section that allows selection of individual metro areas and sub areas (cities and suburbs).
Site design could use some work--I don't see an ability to link or print profiles for individual areas or to see comparative rankings so I can't provide a direct link to Portland specific data, but scroll down in the Brookings site and you will be able to find it.
I downloaded Excel data and on one dimension this is what I calculate for Portland for the
"2000 to 2008-2012 Change in Share of Poor Residing in Tracts with Poverty Rates 20% or Higher" .
- City of Portland Change, 26% increase, ranked 9th worst in the country out of central cities for 100 metro areas.
- Suburbs of Portland Change, 24% increase, ranked 15th worst in the country out of suburbs in 100 metro areas.
- Metro Portland Change, 24% increase, ranked 10th worst in the country out of 100 metro areas.
Originally created and posted on the Oregon Housing Blog.