Portland is 8% more expensive than Richardson.
When comparing Portland, OR and Richardson, TX, the overall cost of living indices are 138 and 128 respectively (national median = 100). Rent is $229/month cheaper in Portland, saving renters about $2,748/year.
Median household income is $7,465/year higher in Richardson. Home values also differ significantly — the median in Portland is $557,600 compared to $405,600 in Richardson.
Texas has no state income tax, giving Richardson residents a significant tax advantage over Oregon's 9.9% rate.
Portland vs Richardson — common questions
Other cost of living comparisons for Portland and Richardson