This phone number is «Mattress Firm Portage», located at 6046 Us Highway 6Portage, IN 46368 (Indiana) | This phone number is «Mattress Firm Michigan City», located at 5222 Franklin StMichigan City, IN 46360 (Indiana) | This phone number is «Mattress Firm Highland South», located at 10412 Indianapolis BlvdHighland, IN 46322 (Indiana) | This phone number is «Mattress Firm Merrillville», located at 1307 E 79th AveMerrillville, IN 46410 (Indiana) | This phone number is «Mattress Firm Valparaiso East», located at 300 Porters Vale Blvd Suite 100Valparaiso, IN 46383 (Indiana) |