San Francisco is 71% more expensive than Seattle.
When comparing San Francisco, CA and Seattle, WA, the overall cost of living indices are 267 and 196 respectively (national median = 100). Rent is $421/month cheaper in Seattle, saving renters about $5,052/year.
Median household income is $19,462/year higher in San Francisco. Home values also differ significantly — the median in San Francisco is $1,380,500 compared to $912,100 in Seattle.
Washington has no state income tax, giving Seattle residents a significant tax advantage over California's 13.3% rate.
San Francisco vs Seattle — common questions