ZIP Code 11731

Households in ZIP code 11731, centered on Stony Brook, earn a median of $161,132, placing the area firmly in affluent territory, with per-capita income at $67,081. Homes here carry a median value of $646,600, and the county-level property tax rate of 1.73% means owners face a substantial annual bill tied to that valuation. Add an 8.75% combined sales tax on purchases, and the overall cost of living runs high. Strong incomes support these obligations, yet the tax load remains a real factor shaping who can settle in and stay around Stony Brook.