Birch Bay, WA vs SeaTac, WA

There is a significant gap in the cost of living between these two cities. Birch Bay is 15.5% cheaper than SeaTac. With a cost index of 109 vs 129, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from Birch Bay to SeaTac should plan for substantially higher expenses across most categories.

On the housing front, median rent in Birch Bay is $1,201/month compared to $1,637/month in SeaTac — a 27% difference. Home values follow the same pattern: Birch Bay is more affordable at $439,100 median vs $483,200.

Median household income in Birch Bay is $77,120 compared to $76,517 in SeaTac (+0.8%). Birch Bay offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Birch Bay spend roughly 18.7% of their income on rent, less than the 25.7% in SeaTac.

Climate-wise, both cities share similar average temperatures (51.2°F vs 53.7°F). SeaTac receives more rainfall at 39.3" per year compared to 34.7" in Birch Bay.