ZIP Code 11939

Households in ZIP code 11939, near Stony Brook, earn a median of $102,500, while per-capita income reaches $76,865 — figures that place the area firmly in affluent territory. Home values reinforce that standing, with a median of $857,800. Owners here face a county-level effective property tax rate of 1.73%, a meaningful levy given those valuations. Purchases carry an 8.75% combined sales tax. Together, these costs mean high earnings in this ZIP are matched by a substantial tax load across property and everyday spending alike.