ZIP Code 06390

In ZIP code 06390, which takes in Stony Brook, households earn a median of $98,125, while per-capita income sits at $38,711. That gap hints at larger households or more earners under one roof, so housing costs carry real weight here. County property taxes run at an effective 1.73%, and the combined sales tax reaches 8.75%, which adds up quickly on everyday purchases. A six-figure median gives families room to absorb these costs, though the sales rate still trims spending power on each transaction. Budgeting around both taxes matters for anyone buying a home or planning major purchases in this area.