ZIP Code 11743

ZIP code 11743, centered on Stony Brook, ranks among the wealthier areas on Long Island. A median household income of $183,187 and per-capita income of $89,157 place it firmly in affluent territory, well above what middle-income communities earn. Homes carry a median value of $783,100, and the county-level effective property tax rate of 1.73% means owners of such properties face substantial annual bills. Sales tax adds 8.75% to most purchases. Between steep property levies and elevated home prices, the cost of living here is high, though the income levels generally align with that expense.