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Mattress Firm Williston

Mattress Firm

Williston, ND

4.9(428 reviews)
9 active offers6 store perks
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About Mattress Firm

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 Promotions
Last updated Oct 23, 2026

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.
Purchase Incentives
  • 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
Mattress Selection

Brands

Tempur-Pedic
Purple
Sealy
Sleepy's

Ideal for

teens
growing children
adults

Technology

memory foam
hybrid
innerspring

Assortment

Box Springs & Frames
Adjustable Bed Bases
Bedding
Furniture & More

Price range

$
$$
$$$
$$$$

Price range not yet reported

What Your Neighbors Say

Real Google reviews from nearby shoppers

See all reviews

Average rating 4.9 · 428 reviews

Last updated Jul 4, 2026

Steve Sunzeri· 5★ · 2026-04-11T22:25:39.875057408Z

The sales girl was very helpful and pleasant. Covered the benefits of the mattresses I looked at and tried. Explained the trial period and exchange policies fully. Would recommend Mattress Firm to anyone who asks if I knew of a good place to purchase a new bed.

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Tae Paulson· 5★ · 2026-03-07T14:18:00.446333025Z

Corey Corey Corey !!!!! We had the best experience working with Corey at Mattress Firm. She was knowledgeable, patient, and really took the time to help me find the right bed for my needs. She explained the different options clearly without making me feel pressured, which I really appreciated. The whole process was smooth and easy, and I’m very happy with the bed I ended up choosing. If you’re looking for great customer service and someone who genuinely wants to help, I definitely recommend asking for Corey!

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Jonelle Harder· 5★ · 2026-04-23T00:10:24.874383281Z

Called earlier in the day, and they were super helpful with products and what they had. Finally made it in later in the evening and she went above and beyond for me. With her knowledge of the products, to her assistance with keeping my you g one entertained. Easiest and most convenient mattress purchase I think I have ever had.

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Whitney Gall· 5★ · 2026-05-28T17:49:59.746056819Z

Corey was wonderful to work with! She was super polite and knowledgeable. We had a great experience! Thank you Corey!

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Candace Bridges· 5★ · 2026-03-17T19:04:08.048878914Z

A big thank you to my mans, Corey... at the Williston Mattress Firm... I believe that was his name, he's the store manager and he was really helpful, knowledgeable, and super friendly!!! He made two VERY happy customers a few days ago!! I'll be sleeping like a baby tomorrow night!!! I'M STOKED!!! Thank you, Corey (I know I probably spelled it wrong but you know who you are!!!)

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