Mattress Firm is located in Port Jefferson Station NY, Zip Code: 11776 on the street of 4840 Nesconset Hwy. If you want to ask something about the furniture, mattresses, catalog, pricing, hours and directions, the Phone number is 631-474-0378. The coordinates that you can use in navigation applications to find Mattress Firm quickly are 40.918608 -73.053379 USA