Seaford, NY vs Williamsville, NY

The cost of living difference between Seaford, NY and Williamsville, NY is dramatic. Williamsville is 85.5% cheaper than Seaford, a gap that translates to thousands of dollars per year in household expenses. Seaford has a cost index of 170 while Williamsville sits at 92, 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 Seaford is $2,612/month compared to $1,277/month in Williamsville — a 105% difference. Home values follow the same pattern: Williamsville is more affordable at $242,800 median vs $631,000.

Median household income in Seaford is $156,488 compared to $106,250 in Williamsville (+47.3%). The higher salaries in Seaford partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Seaford spend roughly 20% of their income on rent, more than the 14.4% in Williamsville.