Seattle is 80% more expensive than San Bernardino.
When comparing Seattle, WA and San Bernardino, CA, the overall cost of living indices are 196 and 109 respectively (national median = 100). Rent is $565/month cheaper in San Bernardino, saving renters about $6,780/year.
Median household income is $57,996/year higher in Seattle. Home values also differ significantly — the median in Seattle is $912,100 compared to $384,900 in San Bernardino.
Washington has no state income tax, giving Seattle residents a significant tax advantage over California's 13.3% rate.
Seattle vs San Bernardino — common questions
Other cost of living comparisons for Seattle and San Bernardino