Mattress Firm Zilker South is located in Austin TX, Zip Code: 78704 on the street of 2424 S Lamar Blvd. If you want to ask something about the furniture, mattresses, catalog, pricing, hours and directions, the Phone number is 512-326-1965. The coordinates that you can use in navigation applications to find Mattress Firm Zilker South quickly are 30.30776 -97.70917 USA