Mattress Firm is located in Sayville NY, Zip Code: 11782 on the street of 5640 Sunrise Hwy. If you want to ask something about the furniture, mattresses, catalog, pricing, hours and directions, the Phone number is 631-244-3702. The coordinates that you can use in navigation applications to find Mattress Firm quickly are 40.76593 -73.07462 USA