Rock Island, WA vs Zillah, WA

Rock Island is moderately more affordable than Zillah, with a 6.5% lower cost of living index. Rock Island scores 90 compared to 96 for Zillah, where the US average is 100. This difference means residents of Zillah can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in Rock Island is $1,094/month compared to $1,235/month in Zillah — a 11% difference. Home values follow the same pattern: Rock Island is more affordable at $255,500 median vs $297,000.

Median household income in Rock Island is $55,114 compared to $72,461 in Zillah (-23.9%). While Zillah is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Rock Island spend roughly 23.8% of their income on rent, more than the 20.5% in Zillah.

Climate-wise, both cities share similar average temperatures (51.2°F vs 50.8°F). Zillah receives more rainfall at 8" per year compared to 7.8" in Rock Island.