Mercer Island, WA vs Sammamish, WA

There is a significant gap in the cost of living between these two cities. Sammamish is 20% cheaper than Mercer Island. With a cost index of 224 vs 269, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from Sammamish to Mercer Island should plan for substantially higher expenses across most categories.

On the housing front, median rent in Mercer Island is $2,464/month compared to $2,728/month in Sammamish — a 10% difference. Interestingly, home values tell a different story: while Mercer Island has cheaper rent, Sammamish actually has lower median home values ($1,240,300 vs $1,884,200).

Median household income in Mercer Island is $202,359 compared to $227,273 in Sammamish (-11%). Sammamish offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Mercer Island spend roughly 14.6% of their income on rent, more than the 14.4% in Sammamish.

Climate-wise, both cities share similar average temperatures (53.8°F vs 53.6°F). Mercer Island receives more rainfall at 36.5" per year compared to 34.7" in Sammamish.