Mattress Firm offers a wide selection of mattresses from top brands, including Tempur-Pedic, Purple, Sealy, and Sleepy's. They provide various promotions, such as the Memorial Day Sale with up to 60% off, and offer financing options like 0% interest with equal monthly payments on qualifying purchases. Customers can enjoy free and fast delivery, a low price guarantee, and a 120-night sleep trial. All mattresses are assembled in the U.S.
Current homepage sales include up to $700 off, a free adjustable base with select mattresses, select price-point and bundle offers, clearance mattresses up to 70% off, $300 instant gifts, and an extra 15% off qualifying purchases.
- Black Friday Sale: Save up to $700Expires: 2026-12-08Savings vary by product and model; valid only on models indicated; product selection may vary by store.
- Free adjustable base with select mattressesSelect mattresses.
- Queen beds under $500Queen beds.
- Sleepy's By Sealy Spring Luna Euro Top mattress and adjustable base bundle
- Any size for $249.99 on select mattressesSelect mattresses.
- Up to 70% off select clearance mattressesSelect clearance mattresses; while supplies last.
- $300 instant gift toward a total sleep solution
- $300 instant gift on select Purple mattressesSelect Purple mattresses.
- Get an extra 15% offQualifying purchase; available online or in-store.
- 0% interest with 72 equal monthly paymentsQualifying purchases with Mattress Firm credit card; subject to credit approval. For 60- and 72-month in-store purchases, taxes and delivery fees must be paid upfront.
- Free and fast delivery
- Free & Fast Delivery
- Financing & Leasing
- Low Price Guarantee
- 120 Night Sleep Trial
Brands
Ideal for
Technology
Assortment
Price range
Estimated price positioning for this store
Real Google reviews from nearby shoppers
Average rating 4.9 · 739 reviews
Last updated Aug 17, 2026
Laura Barnett is truly an outstanding sales person in the mattress firm store in Port Jefferson Station, New York. When I met Laura she greeted me with a smile and immediate warmth that made me realize how personable she was. When we spoke about the kind of mattress I was interested in, she was very knowledgeable about different brands and options I might consider. Laura listened very carefully to what I was saying, asked me appropriate questions and I thought how easy it was to talk to her. Laura is also very patient and will spend as much time as needed with you. I purchased the mattress and there had been some adjustments made. Laura handled everything efficiently and quickly and made it easy for me to deal with these changes. I am very pleased how everything worked out and my mattress is just what I needed. Thank you, Laura for your expertise and for being such a delight. Sincerely, Marjorie Alley
View on GoogleJeff was a professional from start to finish. Not your typical salesperson. He listened and responded with my needs in mind. Explained everything with patience. If I ever need a mattress again, I would definitely come back to him.
View on GoogleMy husband, Phil, and I bought a mattress from Mattress Firm In Port Jefferson this afternoon. Our salesman was Frank and he was not only very knowledgeable But he was extremely pleasant to deal with from the moment we walked in the door until the moment we left. He had such a great personality and we were very happy with the level of service he provided. There was no pressure whatsoever, and he answered all of our questions with a great attitude.We highly highly recommend Mattress Firm in Port Jefferson and we can't wait to get our new mattress. Thank you for such an easy and pleasurable experience!! Maureen & Phil
View on GoogleI was greeted by a salesman named Jeff Morales. He was very knowledgeable and showed me different types of beds. I purchased the Kingsdown Precise. I also got the adjustable base. It was very comfortable and I was happy with my choice. I will write more after my delivery. Thank you, Jeff.. Elodia G.
View on GoogleLaura was a pleasure. Very patient and did not make us feel rushed. Showed us lots of models, listening to what we were interested in finding to help us find the perfect mattress for us. Made the process less stressful and reassured us that it’s not possible to make the wrong decision given their excellent “trial” period to try the mattress out at home and make sure we are getting the sleep we need!
View on Google- Mattress Firm Clearance Center Lake Grove
Lake Grove, NY · 5.4 miles
- Mattress Firm Patchogue
Patchogue, NY · 10.0 miles
- Mattress Firm Sayville
Sayville, NY · 10.6 miles
- Mattress Firm Jericho Turnpike
Commack, NY · 13.9 miles
- Mattress Firm Commack
Commack, NY · 14.4 miles
- Cozy Living Indoor & Outdoor Furniture ( Outlet Store)
Port Jefferson Station, NY · 1.8 miles
- Mattress Express 112
Port Jefferson, NY · 1.1 miles
- Ollie's Bargain Outlet
Selden, NY · 3.7 miles
- Atlantis Discount Mattress & Furniture
Coram, NY · 4.3 miles
- Mattress Gallery at P.C. Richard & Son
Stony Brook, NY · 4.7 miles