Islip, NY vs West Seneca, NY

The cost of living difference between Islip, NY and West Seneca, NY is dramatic. West Seneca is 77% cheaper than Islip, a gap that translates to thousands of dollars per year in household expenses. Islip has a cost index of 146 while West Seneca sits at 82, 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 Islip is $2,192/month compared to $1,040/month in West Seneca — a 111% difference. Home values follow the same pattern: West Seneca is more affordable at $215,000 median vs $486,900.

Median household income in Islip is $122,596 compared to $75,465 in West Seneca (+62.5%). The higher salaries in Islip partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Islip spend roughly 21.5% of their income on rent, more than the 16.5% in West Seneca.