Seattle and Fullerton have a similar cost of living.
When comparing Seattle, WA and Fullerton, CA, the overall cost of living indices are 196 and 195 respectively (national median = 100). Rent is $126/month cheaper in Seattle, saving renters about $1,512/year.
Median household income is $17,765/year higher in Seattle. Home values also differ significantly — the median in Seattle is $912,100 compared to $859,600 in Fullerton.
Washington has no state income tax, giving Seattle residents a significant tax advantage over California's 13.3% rate.
Seattle vs Fullerton — common questions
Other cost of living comparisons for Seattle and Fullerton