Mattress Firm Knox Park — Bed & Mattress Store Dallas TX
Franchise Owned Clearance Center New & Clearance Showroom 3003 Knox St Ste 103Dallas, TX, 75205
10:00am- 8:00pm
12:00pm- 6:00pm

This store accepts donations

How do we stack up?

Mattress Firm LogoGallery Furniture LogoRooms To Go LogoMattress 1 Logo

# of Houston Locations

Over 100 Houston Locations

3 Houston Locations

4 Houston Locations

100 Houston Locations

Comfort Guarantee

120 Night Sleep Happy Guarantee

90 Days

48 Hours after Delivery

180 Days

Mattress Selection






Offer 3 ways to get it delivered to give you choice, convenience and satisfaction. Order before 3pm and get it delivered SAME DAY. 3 Hour Delivery Window.

Same day within 100 miles of Houston location. 6 Hour Delivery Window.

$49.99 Delivery

Free Delivery


Mattress Firm Logo
  • # of Houston Locations: Over 100 Houston Locations
  • Comfort Guarantee: 120 Night Sleep Happy Guarantee
  • Mattress Selection: 108
  • Delivery: Offer 3 ways to get it delivered to give you choice, convenience and satisfaction. Order before 3pm and get it delivered SAME DAY. 3 Hour Delivery Window.
Gallery Furniture Logo
  • # of Houston Locations: 3 Houston Locations
  • Comfort Guarantee: 90 Days
  • Mattress Selection: 27
  • Delivery: Same day within 100 miles of Houston location. 6 Hour Delivery Window.
Rooms To Go Logo
  • # of Houston Locations: 4 Houston Locations
  • Comfort Guarantee: 48 Hours after Delivery
  • Mattress Selection: 56
  • Delivery: $49.99 Delivery
Mattress 1 Logo
  • # of Houston Locations: 100 Houston Locations
  • Comfort Guarantee: 180 Days
  • Mattress Selection: 63
  • Delivery: Free Delivery

Mattress Firm Knox Park | Beds & Mattresses Store Dallas TX 75205


At Mattress Firm’s locations in Dallas, TX, you won’t believe how far your budget stretches.

As America’s favorite neighborhood mattress store, we started as a handful of mattress stores more than 30 years ago in Houston and have since evolved into the nation’s largest mattress retailer. No matter what your sleep style is, we’ll always have your back, side and stomach, and we won’t rest easy until you do.


We constantly refine our selection to fit everyone’s specific sleep needs, matching millions of people with the perfect mattresses that perfectly fit their budgets. Whether you’re dealing with snoring or backaches, have trouble falling asleep regularly or the time has simply come to replace your old mattress, we’re here to help. Everybody and every body is different. So, at Mattress Firm locations in Dallas, TX, we carry a variety of brands and construction types, ranging from traditional innerspring to hi-tech hybrids and memory foam from brands you love, like Sleepy’s, tulo, Beautyrest, Serta and more.


120 Night Sleep Trial

We’re so confident we’ll match you with the right mattress, you can take it home and sleep on it for 120 nights. If it’s not the perfect fit, we’ll happily pick it up and pair you with a new one.

120 Night Low Price Guarantee

We’re making a promise to help you sleep easier. We’ll beat any price on comparable mattresses, even ones you buy from us, for up to 120 nights. Just show us, and we’ll refund you.

A Convenient Delivery

We have delivery options that fit your schedule. We offer same-day delivery on some orders, which rolls out the red carpet upon arrival. Or maybe you’d like the simplest shipping method—our bed in a box options—that literally bring your mattress to your doorstep. We have something that conveniently fits your schedule.

Mattress Firm Knox Park is rated 4.7 out of 5 by 123.
Rated 4 out of 5 by from Excellent Customer Service, but delivery late I knew exactly which mattress I wanted, and Sam took care of me at the store very quickly and thoroughly. I was happy to learn they delivered until 10 p.m.; however, the delivery people did not deliver until close to 10:30 p.m. (They called to try to deliver earlier than the agreed-upon window, which I could not accommodate because I was at work, but I am still a tad disappointed that I was then (from my perspective) put toward the end of the run.) But that is my only complaint; once there, they too worked quickly and very professionally. I am overall very happy with their service.
Date published: 2015-12-17
Rated 5 out of 5 by from Totally satisfied From the moment I walked into the store to the moment I walked out I had a great experience. The sales rep was extremely knowledgeable. He gave me several options to test and was patient as I tried multiple mattresses. I was comfortable through the entire process and did not feel pressured into buying something. He made suggestions that were helpful but not pushy. He did offer pillows and sheets as an upsell, but did not force those on me as some other places tend to do. He listened to my wants and needs and did his job very well to ensure those were met. Thank you Wesley Mueller!! I have slept soundly for the past two night with my new bed and pillow - something that hasn't happened in more than a year!!
Date published: 2017-01-07
Rated 5 out of 5 by from Great experience After leaving another store to compare prices, we went ahead and bought from this store. They have a good selection. And we got exactly what we wanted. But what sold me was John, the sales associate. Super friendly and knowledgeable and funny. We got mattress, box spring, mattress protector, and 2 really good pillows for the same price it would have cost us to buy mattress and box spring elsewhere. We were pleased with their service and delivery the next day! We had a good experience and i would definitely go there again for my next mattress.
Date published: 2017-08-05
Rated 2 out of 5 by from Unhappy with mattress selection We purchased a mattress that turned out to be too firm (our mistake). While Mattress Firm has an exchange guaranty, you have to sleep on the mattress for a minimum of 30 days before you can exchange it. I did hear our sales person say "we like you to sleep on it for 30 days before any exchange" but it was not made clear that it was a requirement. Looks like we will not be sleeping well for the next 30 days.
Date published: 2015-10-15
Rated 5 out of 5 by from Comfortalbe with Callie Callie was the rep at the store who was simply wonderful! There was another super nice rep there named Alicia but we didn't deal with her too much. Callie went out of her way to make use feel comfortable and informed. She spent a good deal of time with us and was incredibly patient. Her knowledge and concern for us making the right purchase was refreshing and welcomed. We would absolutely recommend Mattress Firm and would say, Callie is the way to go if you want a rep who's looking out for you. Two thumbs up without question!!
Date published: 2018-03-12
Rated 5 out of 5 by from Easy experience! I entered Mattress Firm with the idea that I needed a low cost mattress for a platform bed in our guest room. I told the sales person what I was looking for and without fuss she showed me my options. Purchase was easy, she offered additional items but was not offended when I didn't want them, the mattress was in stock at the store, and we were able to pick up the next day with a friend's truck. A family member recently stayed the night and said the mattress was comfortable, so over all this was a painless experience.
Date published: 2016-08-07
Rated 5 out of 5 by from Great experience Loved having Noa help me find a mattress and adjustable base for me. Fabulous experience and Noa was knowledgeable and understanding of my needs. It made me comfortable with my decision. Thank you for a wonderful experience and can't wait to get my new bed.
Date published: 2017-09-25
Rated 5 out of 5 by from Super easy to purchase & delivered same day! It was such an easy and painless experience to order a mattress for my toddler's new bed. I had my three-year old with me, and he enjoyed the experience too. The store even had Legos for him to play with while we completed the paperwork. The customer service was super. Wesley was very knowledgeable, helpful, and quick with the paperwork. I was excited to have the mattress delivered the same day we ordered. Great experience. We will definitely be back.
Date published: 2016-09-18
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