Seattle is 58% more expensive than Portland.
When comparing Seattle, WA and Portland, OR, the overall cost of living indices are 196 and 138 respectively (national median = 100). Rent is $402/month cheaper in Portland, saving renters about $4,824/year.
Median household income is $33,192/year higher in Seattle. Home values also differ significantly — the median in Seattle is $912,100 compared to $557,600 in Portland.
Washington has no state income tax, giving Seattle residents a significant tax advantage over Oregon's 9.9% rate.
Seattle vs Portland — common questions