New York is 15% cheaper than Seattle.
When comparing New York, NY and Seattle, WA, the overall cost of living indices are 166 and 196 respectively (national median = 100). Rent is $219/month cheaper in New York, saving renters about $2,628/year.
Median household income is $42,271/year higher in Seattle. Home values also differ significantly — the median in New York is $751,700 compared to $912,100 in Seattle.
Washington has no state income tax, giving Seattle residents a significant tax advantage over New York's 10.9% rate.
New York vs Seattle — common questions
Other cost of living comparisons for New York and Seattle