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Mattress Firm Wentzville

Mattress Firm

Wentzville, MO

4.9(678 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

$
$$
$$$
$$$$

Estimated price positioning for this store

What Your Neighbors Say

Real Google reviews from nearby shoppers

See all reviews

Average rating 4.9 · 678 reviews

Last updated Jul 21, 2026

Rachel Weekley· 5★ · 2026-05-25T19:22:12.379062819Z

Great service! We had already been in before to browse, but hadn't made a decision. Bob helped my husband and I try out several, answering all our questions and guiding us to what we liked the best. We returned to make a decision and Katie was great! She let us look without pressure and despite the store being very busy, she helped us wrap up our purchase and financing very quickly! I can't wait until my mattress arrives!

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Sarah Byington· 5★ · 2026-06-23T15:47:19.828414596Z

Even tho it was a little busy when we went in, we were greeted. We had time to look around at mattresses ourselves before someone was available. Only had to wait about 5 minutes. Katie was very helpful and friendly! We were in and out with the mattress scheduled to deliver in only 2 days! Highly recommend!

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Shannon Cavness· 5★ · 2026-06-01T11:41:38.247208240Z

Katie made our mattress buying experience much easier than expected. She is knowledgeable, friendly and did not “sell” us but helped us make informed decisions. Thanks Katie!

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Jin-Ah Sung· 5★ · 2026-05-09T15:20:55.402990966Z

Danielle was awesome! She made our first experience buying a mattress really easy and stress-free. She didn't try to push a sale onto us, she listened to what we wanted and suggested the perfect one for us.

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Danielle Clinton· 5★ · 2026-01-04T16:15:41.593900428Z

This by far was one of my best experiences with making such a major purchase on my new mattress and frame. Danielle was knowledgeable, professional ,patient and took her time to explain all the details of my purchase. I ended up buying The best mattress and frame without having to compromise, comfort and pricing. And The delivery service was just as great of an experience. I would definitely recommend this location to anyone looking for a new mattress, frame and the accessories.

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