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Mattress Firm South County

Mattress Firm

St. Louis, MO

4.8(534 reviews)
5 active offers6 store perks
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 Jul 27, 2026
  • 72 Hour Sale: Up to 60% off select mattresses.Expires: Monday
  • $300 Instant Gift toward a total sleep solution.
  • $300 Instant Gift with select adjustable bases.
  • Sleepy’s by Sealy Skye Hybrid Mattress + Adjustable Base.
  • Get any size for one price on select mattresses starting at $219.99.
Purchase Incentives
  • 0% interest with 72 equal monthly payments on qualifying purchases.
  • Free & 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 4.8 · 534 reviews

Last updated Jul 8, 2026

Brian Lovrey· 5 · 2026-05-27T23:48:05.013815240Z

Our experience was made perfect because of the store manager, Dominic. I have never experienced such a knowledgeable young man who was so informativ, Patient and helpful. It was such a pleasure to shop at Mattress Firm and Dominic was the reason we purchased from him and not a competitor who had a product we thought we were set on buying. Dominic, thank you for making our experience so pleasant.

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Cassandra Groves· 5 · 2026-05-05T03:26:00.012136375Z

I had mostly made up my mind about the bed and adjustable base that I wanted. I was about to order online, but really wanted to be able to see it person. I can't express how thankful I am that we started our shopping around experience at Mattress Firm. Dominic was great! Didn't try to upsell me and really listened. I went with a slightly different model of Dream Cloud than I expected based on Dominic's recommendation. My delivery arrived in 2 days. We let the mattresses sit and fully expand in an unused room for 2 full days before using. I slept on it one night so far and honestly all my aches and misery I've been feeling because of my last new mattress are 95% improved. My last new mattress was more expensive than the entire set up of a split king with an adjustable bases. The price was slightly less than I would have paid online directly from manufacturer and the sheets, pillows, and mattress protectors were customized to what we preferred by buying at Mattress Firm. Also, the split king setup is AMAZING! One big bed, without being disturbed by your partner's every move. Dominic - Thank you!

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shelia mccarthy· 5 · 2026-05-25T16:52:26.926596718Z

Our ( myself and husband) experience was very good. Two guys Dominic and Gavin were very personable and knowledgeable. Neither!!,, were your Typical cliché sales person. Which was a nice appreciated experience . We actually had a nice conversation with both. You have good guys working for you. And,, yes we bought a mattress. Thank you Dominic. 👍. Job well done . S McCarthy

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Cole Kline· 5 · 2026-02-27T15:51:06.592929261Z

Walked into the Mattress Firm store in St. Louis overwhelmed by all the choices. Gavin greeted me immediately and turned the experience into something genuinely enjoyable. He listened carefully to my sleep issues (back pain, sleeping hot, side sleeping), explained the differences between hybrids, memory foam, and cooling tech without any jargon overload, and never once pushed me toward the priciest option. He helped me find the perfect mattress that actually fits my needs and budget, hooked me up with a solid promotion, and made the whole buying process transparent and stress-free.

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Barb Ludwig· 5 · 2026-06-14T14:58:36.450809175Z

From the moment we walked in Matt and Gavin were every knowledgeable and professional. We left went to other mattress company's but nothing compared so we went back and bought from them. Thanks for making the process so enjoyable and getting us the right mattress.

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