Mattress Firm Frankfort is located in Frankfort IL, Zip Code: 60423 on the street of 19959 S La Grange Rd. If you want to ask something about the furniture, mattresses, catalog, pricing, hours and directions, the Phone number is 815-464-5311. The coordinates that you can use in navigation applications to find Mattress Firm Frankfort quickly are 41.5269 -87.84995 USA