The Consumer Price Index for shelter had a higher increase (6.0%) in the Portland-Salem area than the U.S. city average (3.2%). Shelter is about one-third of the CPI - All Items, which helped push Portland's CPI above the U.S.
In contrast, the Portland-Salem area had little change in prices for food. The over-the-year growth rate fell from 3.6 percent in the first half of 2015 to 0.7 percent in the second half of 2015. The over-the-year growth rate for the U.S. city average had a relatively moderate decline from 2.3 percent in the first half of 2015 to 1.4 percent in the second half of 2015.