Seattle is 115% more expensive than St. Paul.
When comparing Seattle, WA and St. Paul, MN, the overall cost of living indices are 196 and 91 respectively (national median = 100). Rent is $750/month cheaper in St. Paul, saving renters about $9,000/year.
Median household income is $48,929/year higher in Seattle. Home values also differ significantly — the median in Seattle is $912,100 compared to $280,300 in St. Paul.
Washington has no state income tax, giving Seattle residents a significant tax advantage over Minnesota's 9.85% rate.
Seattle vs St. Paul — common questions
Other cost of living comparisons for Seattle and St. Paul