Seattle is 16% more expensive than Downey.
When comparing Seattle, WA and Downey, CA, the overall cost of living indices are 196 and 169 respectively (national median = 100). Rent is $106/month cheaper in Downey, saving renters about $1,272/year.
Median household income is $34,584/year higher in Seattle. Home values also differ significantly — the median in Seattle is $912,100 compared to $728,500 in Downey.
Washington has no state income tax, giving Seattle residents a significant tax advantage over California's 13.3% rate.
Seattle vs Downey — common questions
Other cost of living comparisons for Seattle and Downey