Mattress Firm Salt Lake City is located in Salt Lake City UT, Zip Code: 84102 on the street of 512 E 400 S. If you want to ask something about the furniture, mattresses, catalog, pricing, hours and directions, the Phone number is 801-363-1909. The coordinates that you can use in navigation applications to find Mattress Firm Salt Lake City quickly are 40.760415 -111.876489 USA