Mercer Island, WA vs Port Townsend, WA

The cost of living difference between Mercer Island, WA and Port Townsend, WA is dramatic. Port Townsend is 136.5% cheaper than Mercer Island, a gap that translates to thousands of dollars per year in household expenses. Mercer Island has a cost index of 269 while Port Townsend sits at 114, making this one of the more striking comparisons on our site. Relocating between these cities would require a serious reassessment of budget and lifestyle expectations.

On the housing front, median rent in Mercer Island is $2,464/month compared to $1,151/month in Port Townsend — a 114% difference. Home values follow the same pattern: Port Townsend is more affordable at $502,500 median vs $1,884,200.

Median household income in Mercer Island is $202,359 compared to $60,015 in Port Townsend (+237.2%). While Mercer Island is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Mercer Island spend roughly 14.6% of their income on rent, less than the 23% in Port Townsend.

Climate-wise, both cities share similar average temperatures (53.8°F vs 52.1°F). Mercer Island receives more rainfall at 36.5" per year compared to 19.9" in Port Townsend.