Mattress Firm State Line 89th logo

Mattress Firm State Line 89th

Mattress Firm

Kansas City, MO

4.9(756 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

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Average rating 4.9 · 756 reviews

Last updated Jul 6, 2026

Heather Pluard· 5★ · 2026-05-27T00:31:57.671479475Z

Amazing customer service. I ordered the wrong size bed and Shannon fixed everything for me. She got a new one scheduled to be delivered quickly, despite the busy holiday week, and she was super nice to work with. That’s the kind of experience that will keep me a loyal customer. Thank you, Shannon!

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Robin Dicus· 5★ · 2026-04-24T22:15:49.609353060Z

The manager noticed we arrived 15 minutes before opening time at the store. He opened up for us and made it quick and painless. He was kind, understanding and patient with me and my toddler. I appreciate the service very much. I wish I knew th managers name. Great guy, great help.

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Rosalind Fortson· 5★ · 2026-02-11T22:41:55.331559796Z

I was at the Matress Firm on 89th State Line! Wes was the salesperson who assisted me and he was awesome! He told me about all of the mattresses, financing, and he stayed within my price range! I was able to purchase a beautiful Nectar mattress and I cannot wait until it arrives! Wes has 18 years of experience, therefore, if you're in need of a mattress, he's your "go to" man! Thank you, Wes!

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Judy Jackson· 5★ · 2026-03-21T02:31:41.849141991Z

Awesome! Superb Customer Service by Shannon! 100% Shannon is Knowledgeable, Professional, Courteous, Polite and Detailed. I came in with so-ooooo many questions and she gave me an answer to each one of my questions. Since I worked as a Call Center Team Leader for many years, I automatically look for Excellent c/s and that is what I received with Shannon! Thank you Shannon for your Great Assistance in helping me find the mattress and base that I needed!

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Shirley Laird· 5★ · 2026-03-26T21:37:12.659207230Z

Buying a mattress can be a daunting task. Wes at Mattress Firm at 89th and State Line made this so much easier than I expected!! Everything was 100% straight forward. Each step was explained. He did everything he could to help me get exactly what I was looking for. I highly recommend using them for your next mattress purchase. You won’t be disappointed!!

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